1
00:00:01,965 --> 00:00:03,827
<i>Miami Beach, Florida.</i>

2
00:00:04,655 --> 00:00:07,482
<i>Sun, sand and calm blue seas.</i>

3
00:00:10,172 --> 00:00:13,655
<i>But when a tourist points
his camera towards the sky,</i>

4
00:00:13,724 --> 00:00:15,793
<i>he captures a scene of horror.</i>

5
00:00:17,827 --> 00:00:19,586
<i>A plane is falling to the sea.</i>

6
00:00:21,551 --> 00:00:24,620
<i>We have a code 4.
Code 4.
A plane down in the water.</i>

7
00:00:24,689 --> 00:00:27,379
As soon as I saw this,
I realized, I'm like: Oh, no,

8
00:00:27,448 --> 00:00:29,689
this is Chalk's airplane
crashing.

9
00:00:30,793 --> 00:00:33,965
<i>The downed plane
is Chalk's Ocean Airways
Flight 101,</i>

10
00:00:34,034 --> 00:00:35,793
<i>bound for the Bahamas.</i>

11
00:00:38,862 --> 00:00:41,310
Could it have been a collision
with an object?

12
00:00:41,379 --> 00:00:44,655
Could it have been a fire?
Could it have actually been
a criminal act?

13
00:00:47,000 --> 00:00:48,724
Let's notify the FBI.

14
00:00:48,793 --> 00:00:51,931
<i>The incredibly rare video
may hold the answers.</i>

15
00:00:52,000 --> 00:00:53,620
Can you enhance that for me?

16
00:00:53,689 --> 00:00:57,551
<i>An airline renowned for safety
has made a fatal error.</i>

17
00:00:59,620 --> 00:01:03,827
<i>But it will take investigators
hundreds of hours
to finally uncover it.</i>

18
00:01:05,896 --> 00:01:07,137
Bingo.

19
00:01:10,413 --> 00:01:12,482
Mayday, mayday.

20
00:01:35,586 --> 00:01:39,310
<i>The Port of Miami,
December the 19th, 2005.</i>

21
00:01:41,310 --> 00:01:45,344
<i>Giant freighters
and ocean-going cruise ships
are a common sight.</i>

22
00:01:47,896 --> 00:01:52,172
<i>But there's another,
much smaller craft
that's often seen in this port.</i>

23
00:01:54,379 --> 00:01:56,862
<i>Chalk's Ocean Airways
flies seaplanes</i>

24
00:01:56,931 --> 00:01:59,482
<i>in and out
of this busy waterway.</i>

25
00:02:03,379 --> 00:02:05,862
<i>Today,
Flight 101 from Fort Lauderdale</i>

26
00:02:05,931 --> 00:02:09,275
<i>is making a brief stopover here
on its way to the Bahamas.</i>

27
00:02:12,275 --> 00:02:14,482
- Feather propellers.
- Check.

28
00:02:14,896 --> 00:02:16,931
Shut down engine

29
00:02:17,000 --> 00:02:18,827
Shutting down engine

30
00:02:22,310 --> 00:02:26,034
<i>Chalk's flies
to two regular destinations,
both in the Bahamas.</i>

31
00:02:27,137 --> 00:02:30,827
<i>Bimini, where Flight 101
is scheduled to land
this afternoon,</i>

32
00:02:30,896 --> 00:02:32,517
<i>and Paradise Island.</i>

33
00:02:33,413 --> 00:02:35,413
Ladies and gentlemen,
this is your captain speaking.

34
00:02:35,482 --> 00:02:39,620
<i>We're just making
a short stopover here in Miami
to pick up a couple passengers.</i>

35
00:02:39,689 --> 00:02:42,758
<i>We apologize for the delay.
We'll be on our way again soon.</i>

36
00:02:44,758 --> 00:02:48,137
- How many are we picking up?
- Just two. But they're VIPs.

37
00:02:53,344 --> 00:02:55,068
<i>For a small
community like Bimini,</i>

38
00:02:55,137 --> 00:02:57,344
<i>Chalk's seaplanes
are a lifeline.</i>

39
00:02:58,103 --> 00:03:01,034
It's just so much easier
in the seaplane
to get to the north island,

40
00:03:01,103 --> 00:03:03,413
where most
of the populations is,
than going to the airport.

41
00:03:03,482 --> 00:03:05,758
So that was the main thing.
It was a convenience factor.

42
00:03:05,827 --> 00:03:09,551
- Welcome aboard.
Can I see your boarding passes?
- Certainly.

43
00:03:09,620 --> 00:03:13,034
<i>Sergio Danguillecourt
is a Bacardi Rum executive.</i>

44
00:03:13,586 --> 00:03:16,689
<i>He's the great-great-grandson
of the company's founder.</i>

45
00:03:17,965 --> 00:03:22,206
<i>The family is well known
in the local Cuban community
for their anti-Castro politics.</i>

46
00:03:24,103 --> 00:03:27,137
<i>He and his wife are flying
to the Bahamas to buy a yacht.</i>

47
00:03:29,413 --> 00:03:31,758
- The passengers settled in?
- We're all set.

48
00:03:34,517 --> 00:03:36,206
Good afternoon, folks.

49
00:03:36,275 --> 00:03:40,103
<i>We'd like to welcome you
aboard Chalk's Ocean Airways
Flight 101 to Bimini.</i>

50
00:03:40,172 --> 00:03:42,620
<i>Our travel time to Bimini
will be 25 minutes.</i>

51
00:03:42,689 --> 00:03:44,517
Hope you enjoy the flight.

52
00:03:44,586 --> 00:03:46,241
Let's have the Start-Up
Checklist, please.

53
00:03:46,310 --> 00:03:47,689
Roger.

54
00:03:47,758 --> 00:03:50,517
<i>Michele Marks
is in command of today's flight.</i>

55
00:03:50,586 --> 00:03:53,103
<i>She was promoted to captain
earlier this year.</i>

56
00:03:55,172 --> 00:03:58,068
<i>First Officer Paul DeSanctis
joined the airline
eight months ago.</i>

57
00:03:58,137 --> 00:04:00,482
- Starter on.
- Starter on.

58
00:04:00,551 --> 00:04:02,965
<i>This is his first flight
with Captain Marks.</i>

59
00:04:03,034 --> 00:04:05,000
All clear to taxi?

60
00:04:06,275 --> 00:04:07,586
All clear.

61
00:04:14,896 --> 00:04:17,724
<i>The Grumman Mallard
is a twin-turboprop design.</i>

62
00:04:18,482 --> 00:04:21,620
<i>It has a V-shaped hull
and underwing pontoons.</i>

63
00:04:27,068 --> 00:04:29,758
<i>It's designed to carry
up to 17 passengers.</i>

64
00:04:32,000 --> 00:04:34,275
<i>The plane has
retractable landing gear,</i>

65
00:04:34,344 --> 00:04:36,931
<i>so it can operate
on either land or sea.</i>

66
00:04:37,655 --> 00:04:39,172
Gear coming up.

67
00:04:42,827 --> 00:04:44,758
Takeoff on the Mallard,
depending on the days,

68
00:04:44,827 --> 00:04:48,034
it could be a lot of fun
or a real challenge.

69
00:04:49,137 --> 00:04:50,896
Weight and balance check.

70
00:04:50,965 --> 00:04:52,517
We're good.

71
00:04:54,620 --> 00:04:57,724
<i>The Miami seaplane base
has no control tower.</i>

72
00:04:58,275 --> 00:05:01,275
<i>The crew has to keep a lookout
for boat traffic as they taxi</i>

73
00:05:01,344 --> 00:05:04,000
<i>through one of the busiest
ports in the world.</i>

74
00:05:05,655 --> 00:05:08,827
Taking off out of Miami
in the shipping channel,

75
00:05:08,896 --> 00:05:11,551
it's kind of like trying
to take off
during rush-hour traffic.

76
00:05:11,620 --> 00:05:15,551
You've got boat traffic,
wave traffic, the wind,
the airplane to deal with,

77
00:05:15,620 --> 00:05:17,206
and everybody's going
different speeds,

78
00:05:17,275 --> 00:05:19,413
and you're trying
to get up and go,

79
00:05:19,482 --> 00:05:22,310
and navigate around everybody,
so it was always a handful.

80
00:05:26,586 --> 00:05:30,655
<i>Flight 101
will take off from X44,</i>

81
00:05:30,724 --> 00:05:33,413
<i>a seaplane base near a channel
known as Government Cut.</i>

82
00:05:35,103 --> 00:05:38,310
- Prepare for takeoff.
- Roger. Ready to take off.

83
00:05:38,379 --> 00:05:41,103
<i>Both pilots have
their hand on the throttles.</i>

84
00:05:44,275 --> 00:05:48,655
<i>It's to prevent the captain
from inadvertently pulling back
if the plane hits a wave.</i>

85
00:05:52,586 --> 00:05:54,275
Forty-five knots.

86
00:05:55,344 --> 00:05:57,000
Fifty knots.

87
00:06:02,206 --> 00:06:05,448
<i>This is the moment
most passengers are paying for:</i>

88
00:06:05,517 --> 00:06:07,379
<i>The takeoff.</i>

89
00:06:08,517 --> 00:06:10,896
<i>Half speedboat, half plane,</i>

90
00:06:10,965 --> 00:06:12,517
<i>it's a unique thrill.</i>

91
00:06:15,551 --> 00:06:17,206
Seventy-five knots.

92
00:06:17,551 --> 00:06:20,482
Eighty knots.
<i>For the pilots,</i>

93
00:06:20,551 --> 00:06:24,034
<i>accelerating through the waves
is often the most difficult part
of the flight.</i>

94
00:06:25,896 --> 00:06:28,034
The airplane itself was...

95
00:06:28,103 --> 00:06:31,620
really hard to fly
as far as on the water,
getting onto the step,

96
00:06:31,689 --> 00:06:33,896
which was what we call
getting on a plane.

97
00:06:33,965 --> 00:06:37,862
And in rough sea conditions
and in rough wave conditions,
it could be a real challenge.

98
00:06:45,862 --> 00:06:47,931
<i>But this takeoff goes smoothly.</i>

99
00:06:49,896 --> 00:06:52,068
<i>Flight 101 is no longer a boat;</i>

100
00:06:52,137 --> 00:06:54,551
<i>it's now a plane
enroute to Bimini.</i>

101
00:06:56,689 --> 00:06:59,000
<i>It's 2:38 in the afternoon.</i>

102
00:07:06,482 --> 00:07:09,344
<i>The plane's flight path
takes it past South Beach...</i>

103
00:07:10,448 --> 00:07:12,965
<i>...where sunbathers and surfers
are out in force.</i>

104
00:07:19,068 --> 00:07:21,482
<i>Just less than a minute
into the flight,</i>

105
00:07:21,551 --> 00:07:24,344
<i>the Grumman Mallard is climbing
through 500 feet,</i>

106
00:07:24,413 --> 00:07:26,068
<i>well below the clouds.</i>

107
00:07:28,931 --> 00:07:30,724
<i>Then...</i>

108
00:07:38,413 --> 00:07:41,137
<i>...the plane rolls violently
and dives.</i>

109
00:07:45,862 --> 00:07:48,620
<i>The pilots barely have time
to register what's happening.</i>

110
00:07:50,275 --> 00:07:51,965
<i>Their struggles are in vain.</i>

111
00:07:59,793 --> 00:08:01,448
<i>By chance,</i>

112
00:08:01,517 --> 00:08:06,275
<i>a tourist from New York catches
Flight 101's final moments
on his camera.</i>

113
00:08:09,379 --> 00:08:12,827
<i>Sixty seconds after takeoff,
the plane slams into the ocean.</i>

114
00:08:21,344 --> 00:08:24,827
<i>Lucas Bocanegra is a lifeguard
stationed on South Beach,</i>

115
00:08:24,896 --> 00:08:27,137
<i>near the Chalk's Ocean Airways
sea lane.</i>

116
00:08:28,137 --> 00:08:29,586
As soon as I saw this,

117
00:08:29,655 --> 00:08:33,793
I realized... I'm, like: Oh, no,
this is Chalk's airplane
crashing.

118
00:08:33,862 --> 00:08:37,793
<i>We have a code 4.
Code 4.
A plane down in the water.</i>

119
00:08:39,068 --> 00:08:41,034
This is Lucas.
We're launching the jet-ski.

120
00:08:43,275 --> 00:08:46,655
<i>The two lifeguards
are the first rescuers
to go looking for the plane.</i>

121
00:08:58,965 --> 00:09:02,965
We drove as fast as we could
to the scene of the accident.

122
00:09:04,344 --> 00:09:08,137
There were a lot of things
coming through my head.
I was nervous, scared,

123
00:09:08,206 --> 00:09:11,413
I was, uh,
kind of full of adrenaline.

124
00:09:11,482 --> 00:09:13,931
We wanted to go in
and try to rescue
as many people as we could,

125
00:09:14,000 --> 00:09:17,379
but at the same time,
we've never trained
for a situation like this.

126
00:09:20,482 --> 00:09:23,689
As soon as we turned
Government Cut
at those jetty rocks,

127
00:09:23,758 --> 00:09:26,103
we noticed it was very calm,
very quiet.

128
00:09:26,172 --> 00:09:29,241
It wasn't like the ocean side,
where it was, uh, very rough.

129
00:09:29,310 --> 00:09:32,517
There was no waves.
It was very, uh,
kind of very eerie.

130
00:09:40,793 --> 00:09:42,758
<i>At first,</i>

131
00:09:42,827 --> 00:09:46,655
<i>Lucas Bocanegra finds no sign
of Flight 101
or any of the passengers.</i>

132
00:09:48,068 --> 00:09:52,241
Little by little, we started
seeing debris float up
onto the surface of the water.

133
00:09:59,068 --> 00:10:02,206
And we saw some chairs,
some luggage here and there.
And, uh...

134
00:10:02,275 --> 00:10:04,965
suddenly we noticed
there was a body in the water.

135
00:10:06,965 --> 00:10:10,310
As soon as we put the body
on our jet-ski,

136
00:10:10,379 --> 00:10:14,034
we realized that,
from his injuries,
there was nothing we could do.

137
00:10:18,241 --> 00:10:20,965
From there, it was just try
to recover as many bodies.

138
00:10:21,034 --> 00:10:23,103
You know, bring them back
for their families.

139
00:10:28,068 --> 00:10:30,103
<i>News crews swarm the beach.</i>

140
00:10:30,586 --> 00:10:33,000
<i>Chalk's Flight 101
plummeted into the channel</i>

141
00:10:33,068 --> 00:10:35,689
<i>in full view of tourists
lining Miami Beach.</i>

142
00:10:35,758 --> 00:10:39,931
In a fraction of a second,
the whole plane was engulfed
in flames.

143
00:10:40,000 --> 00:10:43,724
Black smoke
and then an explosion.
Pure fire in the sky.

144
00:10:43,793 --> 00:10:46,758
It was so surreal.
We couldn't believe
we actually witnessed that.

145
00:10:49,344 --> 00:10:53,000
<i>Chopper 4 over the wreckage
as Miami Beach Coast Guard
look for any survivors.</i>

146
00:10:54,413 --> 00:10:56,344
<i>But the effort is futile.</i>

147
00:10:59,655 --> 00:11:03,310
We retrieved
some of the bodies,
but we are unable to, uh,

148
00:11:03,379 --> 00:11:05,206
find anyone that had survived.

149
00:11:07,758 --> 00:11:10,000
<i>All 20 people
on board are dead.</i>

150
00:11:11,482 --> 00:11:15,551
<i>Including pilots Paul DeSanctis
and Michele Marks.</i>

151
00:11:19,482 --> 00:11:22,931
<i>The residents of Bimini
are devastated
by the horrific news.</i>

152
00:11:25,896 --> 00:11:29,862
I was very sad for the crew
and the friends
that I had lost on the airplane.

153
00:11:30,620 --> 00:11:33,137
You never expect an accident
to actually happen.

154
00:11:33,655 --> 00:11:35,896
And to see that on television
like I did,

155
00:11:35,965 --> 00:11:38,103
it was very, very sad.

156
00:11:41,862 --> 00:11:43,655
<i>In Washington,</i>

157
00:11:43,724 --> 00:11:46,931
<i>senior NTSB investigator
Bill English is put on the case.</i>

158
00:11:49,034 --> 00:11:52,620
I was just in my office
doing some routine paperwork
for something else,

159
00:11:52,689 --> 00:11:55,793
and the director stuck
his head around and the corner
and said,

160
00:11:55,862 --> 00:11:58,620
"There's been an accident."
And I said, "Well, what is it?"

161
00:11:58,689 --> 00:12:00,137
And he mentioned
a Grumman Mallard.

162
00:12:00,206 --> 00:12:03,000
So I immediately knew
it had to be Chalk's.

163
00:12:06,103 --> 00:12:09,344
<i>Within hours,
investigators
are at the crash site...</i>

164
00:12:10,379 --> 00:12:12,551
<i>...where 19 bodies
have been recovered.</i>

165
00:12:13,275 --> 00:12:14,965
<i>One is still missing.</i>

166
00:12:16,206 --> 00:12:17,965
I was very familiar
with Chalk's Airways.

167
00:12:18,034 --> 00:12:19,862
I'm a seaplane-rated pilot
myself,

168
00:12:19,931 --> 00:12:23,103
and there is the reputation,
the legend of Chalk's Airways,

169
00:12:23,172 --> 00:12:25,551
the oldest
continuously operating airline.

170
00:12:27,517 --> 00:12:29,931
<i>Chalk's has
a long and rich history.</i>

171
00:12:30,000 --> 00:12:32,965
<i>The airline was founded in 1917.</i>

172
00:12:33,620 --> 00:12:37,655
<i>During the Prohibition era,
passenger lists included
notorious rumrunners.</i>

173
00:12:37,724 --> 00:12:39,793
<i>And later,
Hollywood movie stars.</i>

174
00:12:41,275 --> 00:12:44,862
<i>Chalk's planes even patrolled
for German U-boats
during World War II.</i>

175
00:12:46,103 --> 00:12:49,000
The novelty
of flying at Chalk's
was just all that history,

176
00:12:49,068 --> 00:12:50,655
all the people that have gone.

177
00:12:50,724 --> 00:12:53,689
And it was really a great place
to work for that.

178
00:12:54,758 --> 00:12:58,758
<i>The Grumman Mallard
flying boat that crashed
was built in 1947.</i>

179
00:13:01,344 --> 00:13:03,931
<i>Chalk's Ocean Airways
is the only airline</i>

180
00:13:04,000 --> 00:13:06,310
<i>that uses Mallards
to transport passengers.</i>

181
00:13:08,482 --> 00:13:11,172
They're not really
a mainstream type of airplane,

182
00:13:11,241 --> 00:13:13,620
and so there's always
that nostalgia about them.

183
00:13:20,241 --> 00:13:23,034
<i>Salvage crews find
the plane's black box.</i>

184
00:13:23,103 --> 00:13:25,965
<i>Investigators send it
to the NTSB in Washington.</i>

185
00:13:29,000 --> 00:13:33,517
<i>The box promises to reveal
critical information
about what the pilots were doing</i>

186
00:13:33,586 --> 00:13:36,793
<i>in the seconds leading up
to the tragic mid-air disaster.</i>

187
00:13:42,000 --> 00:13:43,551
In any investigation,

188
00:13:43,620 --> 00:13:47,724
the flight-data recorder
and the cockpit voice recorder
are a great desire.

189
00:13:47,793 --> 00:13:51,310
The more data, the better.
We can always learn something.

190
00:13:57,448 --> 00:14:01,068
<i>But Bill English
knows he isn't going to get
all the data he wants.</i>

191
00:14:02,172 --> 00:14:03,586
Okay, thanks.

192
00:14:04,413 --> 00:14:06,655
<i>The only recorder
onboard the Mallard</i>

193
00:14:06,724 --> 00:14:09,379
<i>was a cockpit voice recorder,
or CVR.</i>

194
00:14:12,241 --> 00:14:14,793
Most airline aircrafts
have two flight recorders.

195
00:14:14,862 --> 00:14:18,000
The flight data recorder,
depending on the aircraft,

196
00:14:18,068 --> 00:14:21,758
will record all sorts of...
parameters of the flight:

197
00:14:21,827 --> 00:14:24,448
altitude, airspeed,
control positions and so on.

198
00:14:25,827 --> 00:14:29,241
The Chalk's airplane
was not equipped
with a flight-data recorder.

199
00:14:29,310 --> 00:14:31,724
It did have
a cockpit voice recorder.

200
00:14:33,241 --> 00:14:36,103
<i>Though the lack
of flight data
is a big disappointment,</i>

201
00:14:36,172 --> 00:14:40,344
<i>media coverage of the crash
gives investigators
a very rare piece of evidence.</i>

202
00:14:41,310 --> 00:14:44,206
<i>Authorities revealed
that the final seconds
of Flight 101</i>

203
00:14:44,275 --> 00:14:46,241
<i>were captured on amateur video.</i>

204
00:14:46,310 --> 00:14:49,586
<i>The dramatic footage was shot
by a tourist on South Beach.</i>

205
00:14:50,413 --> 00:14:52,241
Let's get a copy
of that video.

206
00:14:58,344 --> 00:14:59,896
Okay, let's see it.

207
00:15:01,206 --> 00:15:04,206
<i>The video
only captured the final seconds
of the plane crash,</i>

208
00:15:04,275 --> 00:15:08,241
<i>but it confirms
eyewitness reports that a wing
ripped off in mid-air.</i>

209
00:15:09,724 --> 00:15:12,034
Can you enhance that for me?

210
00:15:14,241 --> 00:15:17,827
The video showed the wing
just after separation
from the aircraft,

211
00:15:17,896 --> 00:15:21,000
the main part of the aircraft
fuselage, uh,

212
00:15:21,068 --> 00:15:22,827
rolling off
in the other direction,

213
00:15:22,896 --> 00:15:26,000
and the fire and smoke
starting from that.

214
00:15:29,137 --> 00:15:33,586
It was quite startling
that the wing would fall off
on this plane.

215
00:15:35,241 --> 00:15:36,724
It was a beautiful day,

216
00:15:36,793 --> 00:15:39,137
the water wasn't rough
on the takeoff;

217
00:15:39,206 --> 00:15:42,379
and all of a sudden,
this wing just dropped off.

218
00:15:42,448 --> 00:15:45,620
It must've been absolutely, uh, devastating.

219
00:15:52,586 --> 00:15:56,241
<i>However,
the video can't reveal
why the wing came off.</i>

220
00:15:57,931 --> 00:16:00,793
<i>Answers to that question
may lie at the crash site,</i>

221
00:16:00,862 --> 00:16:05,103
<i>where salvage crews
are finishing their recovery
of the wreckage of Flight 101.</i>

222
00:16:07,896 --> 00:16:11,827
<i>The right wing is found separate
from the plane,
but largely intact.</i>

223
00:16:14,758 --> 00:16:18,620
Wings falling off aircraft,
in a modern-day situations,

224
00:16:18,689 --> 00:16:21,965
is a very rare, extreme event,

225
00:16:22,034 --> 00:16:24,620
and there's only been
a few cases of them

226
00:16:24,689 --> 00:16:27,586
in the past 20 or 30 years.

227
00:16:32,000 --> 00:16:35,862
<i>In Washington,
another type of examination
is already underway.</i>

228
00:16:38,793 --> 00:16:40,551
<i>At the NTSB lab,</i>

229
00:16:40,620 --> 00:16:44,000
<i>technicians are busy
analyzing the Mallard's
cockpit-voice-recorder tape.</i>

230
00:16:45,344 --> 00:16:47,724
The cockpit voice recorder,
CVR,

231
00:16:47,793 --> 00:16:49,448
which does
what it sounds like,

232
00:16:49,517 --> 00:16:52,448
records the pilots' voices
talking to each other
or on the microphones.

233
00:17:00,000 --> 00:17:03,068
<i>But the tape is a jumble
of voices and sounds.</i>

234
00:17:03,137 --> 00:17:05,862
<i>Technicians can't retrieve
any useful information.</i>

235
00:17:09,586 --> 00:17:11,827
It turned out
that the erase-head function -

236
00:17:11,896 --> 00:17:16,793
it's just like a tape recorder
most people are familiar with -
it didn't erase the old stuff.

237
00:17:16,862 --> 00:17:21,000
So every subsequent flight
kept getting recorded over
and over and over again,

238
00:17:21,068 --> 00:17:23,482
and just became a muddled sound,

239
00:17:23,551 --> 00:17:27,482
and it wasn't, uh,
wasn't audible to us,
or useful.

240
00:17:28,620 --> 00:17:30,206
<i>It's another setback.</i>

241
00:17:39,551 --> 00:17:43,448
Okay, let's revisit this again
because we're running out
of options here.

242
00:17:43,517 --> 00:17:47,000
<i>Investigators have
fewer and fewer tools
to work with.</i>

243
00:17:47,517 --> 00:17:49,103
<i>Bill English considers
the possibility</i>

244
00:17:49,172 --> 00:17:52,172
<i>that Flight 101 hit turbulence
so violent</i>

245
00:17:52,241 --> 00:17:54,000
<i>that it tore the plane apart.</i>

246
00:17:55,758 --> 00:17:59,137
<i>But the weather
on the day of the crash
doesn't support that theory.</i>

247
00:18:01,034 --> 00:18:04,379
<i>There were no storms
that could've caused
such severe turbulence.</i>

248
00:18:06,931 --> 00:18:10,172
<i>Clearly, something else
had torn this plane apart.</i>

249
00:18:14,103 --> 00:18:17,862
<i>There's a possibility
the Mallard collided
with something in the water</i>

250
00:18:17,931 --> 00:18:19,448
<i>before takeoff.</i>

251
00:18:21,620 --> 00:18:24,413
Seaplanes don't take off
of a conventional runway.

252
00:18:24,482 --> 00:18:29,206
They're in water,
where there could be things
like logs or other debris,

253
00:18:29,275 --> 00:18:32,241
which could potentially cause
structural issues
with an aircraft.

254
00:18:37,344 --> 00:18:40,310
<i>But before they can reach
a conclusion on that theory,</i>

255
00:18:40,379 --> 00:18:43,310
<i>investigators consider
some other intriguing evidence.</i>

256
00:18:45,068 --> 00:18:49,689
<i>It's an urgent advisory
issued by the Federal
Aviation Administration,</i>

257
00:18:49,758 --> 00:18:51,241
<i>or FAA.</i>

258
00:18:51,310 --> 00:18:53,413
<i>It warns that,
due to a faulty part,</i>

259
00:18:53,482 --> 00:18:57,137
<i>the propellers on the Mallard
could come off during flight.</i>

260
00:18:57,206 --> 00:18:58,724
You're kidding me.

261
00:18:59,931 --> 00:19:02,655
Something...
such as a blade separation,

262
00:19:02,724 --> 00:19:06,448
losing part of the propeller,
could cause a great structural
load on the aircraft.

263
00:19:10,586 --> 00:19:12,827
<i>English now has a solid lead.</i>

264
00:19:13,344 --> 00:19:16,862
<i>But his team is still missing
the evidence they need
to prove their case.</i>

265
00:19:21,724 --> 00:19:25,103
<i>The entire island
is devastated
by the loss of life</i>

266
00:19:25,172 --> 00:19:26,965
<i>as investigators searching
for answers</i>

267
00:19:27,034 --> 00:19:29,413
<i>wait for more wreckage
to be pulled from the sea.</i>

268
00:19:31,931 --> 00:19:34,310
<i>In the aftermath
of the crash,</i>

269
00:19:34,379 --> 00:19:38,862
<i>Chalk's Ocean Airways grounds
its remaining fleet
of four Grumman Mallards.</i>

270
00:19:45,344 --> 00:19:47,965
<i>At the NTSB's
Miami command post,</i>

271
00:19:48,034 --> 00:19:52,551
<i>they're working to identify
various plane fragments
and other debris from the crash.</i>

272
00:19:55,172 --> 00:19:58,379
We started out
with the wing itself
that separated,

273
00:19:58,448 --> 00:20:02,413
the spar,
which is the main part
of the structure of the wing,

274
00:20:02,482 --> 00:20:04,482
and any of the other
fractured surfaces,

275
00:20:04,551 --> 00:20:07,034
looking for obvious
initiation factors.

276
00:20:08,413 --> 00:20:10,379
<i>They carefully examine
the propellers,</i>

277
00:20:10,448 --> 00:20:15,413
<i>looking for evidence
that might confirm suspicions
raised by the FAA advisory.</i>

278
00:20:19,724 --> 00:20:21,413
<i>But it's another dead end.</i>

279
00:20:23,689 --> 00:20:25,896
We were able to determine
all the blades were attached,

280
00:20:25,965 --> 00:20:30,344
and the bending that we saw
was the expected pattern
from proper operation

281
00:20:30,413 --> 00:20:32,551
when those blades hit the water.

282
00:20:34,275 --> 00:20:36,689
<i>Once again,
they're back to square one.</i>

283
00:20:40,000 --> 00:20:41,827
This is what I want you
to look at.

284
00:20:41,896 --> 00:20:44,482
<i>Investigators focus
their attention
on the fractured wing.</i>

285
00:20:45,655 --> 00:20:48,172
<i>They've noticed sooting
on parts of it.</i>

286
00:20:49,482 --> 00:20:51,551
<i>It's evidence
of a very rapid fire.</i>

287
00:20:54,206 --> 00:20:57,206
We want to find anything
that could be
the initiating factor

288
00:20:57,275 --> 00:20:58,793
for the wing separation.

289
00:20:58,862 --> 00:21:01,862
Could it have been a collision
with an object?
Could it have been a fire?

290
00:21:01,931 --> 00:21:04,137
Could it have actually been
a criminal act?

291
00:21:04,931 --> 00:21:07,965
<i>The burn marks
raise a sinister possibility:</i>

292
00:21:08,034 --> 00:21:10,275
<i>An explosion. A bomb.</i>

293
00:21:18,482 --> 00:21:23,068
<i>This now falls outside
the NTSB's area of expertise
and authority.</i>

294
00:21:23,724 --> 00:21:25,344
Let's notify the FBI.

295
00:21:32,068 --> 00:21:36,000
The FBI helps us in many
of our investigations,

296
00:21:36,068 --> 00:21:38,965
and we'll utilize
some of their experts

297
00:21:39,034 --> 00:21:41,793
to rule out terrorism
or a criminal act.

298
00:21:43,482 --> 00:21:47,206
<i>If it was a bomb
that brought down Flight 101,</i>

299
00:21:47,275 --> 00:21:51,172
<i>a likely target would've been
one of the 18 passengers.</i>

300
00:21:53,000 --> 00:21:56,103
Thanks for coming in.
We're gonna need your help
on this.

301
00:21:56,172 --> 00:22:00,034
<i>One name stands out
on the passenger manifest:</i>

302
00:22:00,103 --> 00:22:02,620
<i>Sergio Danguillecourt.</i>

303
00:22:03,344 --> 00:22:06,862
- Welcome aboard.
Can I see your boarding passes?
- Certainly.

304
00:22:06,931 --> 00:22:10,758
<i>There are rumours
on the internet that the crash
was an assassination plot</i>

305
00:22:10,827 --> 00:22:12,758
<i>and Danguillecourt
was the target.</i>

306
00:22:16,517 --> 00:22:19,310
<i>His family made a fortune
in pre-Castro Cuba.</i>

307
00:22:20,655 --> 00:22:23,965
<i>They were so opposed
to Fidel Castro's regime</i>

308
00:22:24,034 --> 00:22:26,586
<i>that they had allegedly
supported clandestine attempts</i>

309
00:22:26,655 --> 00:22:28,793
<i>to overthrow
his Communist government.</i>

310
00:22:30,000 --> 00:22:33,379
This is your copy. Alright?
Now, there's something
I wanted to show you.

311
00:22:36,344 --> 00:22:40,275
We can't tell if it's just soot
or it's explosive residue.

312
00:22:41,482 --> 00:22:43,931
<i>A bomb will leave
chemical traces</i>

313
00:22:44,000 --> 00:22:46,517
<i>and distinctive patterns
in the torn metal.</i>

314
00:22:47,551 --> 00:22:51,137
<i>FBI technicians are specially
trained to detect them.</i>

315
00:22:59,896 --> 00:23:04,034
<i>The samples from the wreckage
will be tested at FBI labs
in Quantico, Virginia.</i>

316
00:23:13,206 --> 00:23:15,310
<i>Four days after the accident,</i>

317
00:23:15,379 --> 00:23:18,758
<i>salvage crews are still
bringing in wing fragments
found at the crash site.</i>

318
00:23:27,551 --> 00:23:30,965
So we need everything
that looks like it'd come
from the right wing.

319
00:23:36,827 --> 00:23:38,896
Can we get some light over here?

320
00:23:45,068 --> 00:23:47,000
Overstress.

321
00:23:47,068 --> 00:23:50,931
<i>Most of the damage they see
is from overstress fractures,</i>

322
00:23:51,000 --> 00:23:54,965
<i>areas where the metal
was literally ripped apart
when the wing tore off.</i>

323
00:23:57,068 --> 00:23:58,931
Come here.

324
00:24:00,482 --> 00:24:02,068
That's the same.

325
00:24:03,379 --> 00:24:06,275
<i>When metal is suddenly stressed
to the point of breaking,</i>

326
00:24:06,344 --> 00:24:09,172
<i>the fracture leaves
a very distinctive rough edge.</i>

327
00:24:10,310 --> 00:24:14,413
<i>It's easy to distinguish it
from fractures that have
developed slowly over time.</i>

328
00:24:16,896 --> 00:24:20,413
Cut this from here to here
and get it to Clint
in Washington.

329
00:24:23,344 --> 00:24:26,379
As we started to examine
the right wing, spar,

330
00:24:26,448 --> 00:24:31,482
and other components on scene
at the Coast Guard station
or the seaplane base,

331
00:24:31,551 --> 00:24:33,620
this was a visual examination
there.

332
00:24:33,689 --> 00:24:37,758
We didn't have
the sophisticated lab tools
that we have at headquarters.

333
00:24:38,655 --> 00:24:41,862
<i>They identify parts
to be shipped to the lab
in Washington,</i>

334
00:24:41,931 --> 00:24:46,655
<i>where they hope closer
inspection will reveal exactly
what went wrong with the wing.</i>

335
00:24:46,724 --> 00:24:48,275
Hey, Clint?

336
00:24:48,344 --> 00:24:51,758
Clint, we're sending you as much
of the wing as we have your way.

337
00:24:51,827 --> 00:24:53,310
Yeah, okay.

338
00:24:57,413 --> 00:24:59,379
Yeah, I'm still waiting
for that report.

339
00:24:59,448 --> 00:25:02,862
<i>The results
from the FBI explosives test
come in.</i>

340
00:25:07,172 --> 00:25:10,344
<i>A mid-air bombing assassination
could explain everything.</i>

341
00:25:17,413 --> 00:25:20,758
<i>But there is no explosive
residue on the wreckage.</i>

342
00:25:20,827 --> 00:25:23,448
Okay, so that rules that out.

343
00:25:29,379 --> 00:25:31,896
<i>Structural failure
is now the chief suspect</i>

344
00:25:31,965 --> 00:25:34,000
<i>in the downing
of Chalk's Flight 101.</i>

345
00:25:36,137 --> 00:25:38,241
Well, that's all that's left.

346
00:25:38,310 --> 00:25:39,793
That's tomorrow.

347
00:25:42,758 --> 00:25:45,896
It was obvious the airplane
had a catastrophic
structural failure.

348
00:25:45,965 --> 00:25:48,655
So we needed to find out
the cause,

349
00:25:48,724 --> 00:25:51,034
the initiating factor
of that structural failure.

350
00:25:53,310 --> 00:25:55,793
<i>He needs to know
more about the long history</i>

351
00:25:55,862 --> 00:25:57,689
<i>of this particular
Grumman Mallard.</i>

352
00:25:59,413 --> 00:26:02,241
It's very typical
in any accident investigation:

353
00:26:02,310 --> 00:26:04,689
We want to look
at the maintenance history
of an aircraft.

354
00:26:04,758 --> 00:26:08,758
For an aircraft
that's 60 years old,
that's even more so important.

355
00:26:09,931 --> 00:26:14,103
<i>It takes days
to comb through the 28 boxes
of old records.</i>

356
00:26:15,482 --> 00:26:19,172
We want to make sure
we can develop an entire history
of this aircraft,

357
00:26:19,241 --> 00:26:22,034
what sort of chronic problems
may have shown up

358
00:26:22,103 --> 00:26:23,724
in the maintenance
of the aircraft,

359
00:26:23,793 --> 00:26:26,137
and what types of work
had been done on any...

360
00:26:26,206 --> 00:26:29,379
any of the factors that looked
likely to be involved.

361
00:26:38,275 --> 00:26:42,034
<i>Clint Crookshanks
is a structures investigator
for the NTSB.</i>

362
00:26:43,206 --> 00:26:44,827
When we go
into an investigation,

363
00:26:44,896 --> 00:26:46,655
we try to go in
with a very open mind

364
00:26:46,724 --> 00:26:49,862
and look at the wreckage
and let it tell the story
for what happened.

365
00:26:53,137 --> 00:26:57,827
We wanted to look at every piece
that broke on the right wing

366
00:26:57,896 --> 00:27:01,275
to determine if this was a...
age-related failure

367
00:27:01,344 --> 00:27:05,413
or if it was something
that was caused
by a structural overload.

368
00:27:06,655 --> 00:27:08,241
<i>As with most aircraft,</i>

369
00:27:08,310 --> 00:27:10,827
<i>the Mallard's wings
are built from aluminum alloy.</i>

370
00:27:12,172 --> 00:27:14,448
<i>The spars run the length
of each wing.</i>

371
00:27:15,655 --> 00:27:19,000
<i>In between the spars
are stringers
that give added support.</i>

372
00:27:20,137 --> 00:27:23,137
<i>Together, these parts
make up the wing box,</i>

373
00:27:23,206 --> 00:27:25,310
<i>which also doubles
as a fuel tank.</i>

374
00:27:26,034 --> 00:27:29,068
And then the skin is overtop
of all that structure

375
00:27:29,137 --> 00:27:33,931
to kind of give a smooth,
aerodynamic look to the wing.

376
00:27:34,620 --> 00:27:38,482
All of these together work
to carry the flight loads

377
00:27:38,551 --> 00:27:40,793
that the wing
is designed to carry.

378
00:27:40,862 --> 00:27:43,379
Once you compromise one piece
of that structure,

379
00:27:43,448 --> 00:27:46,586
the ability to carry
the normal flight loads
has been compromised.

380
00:27:47,655 --> 00:27:48,896
Thanks.

381
00:27:52,137 --> 00:27:55,413
<i>Over the years,
the wing box had been repaired
many times.</i>

382
00:27:56,517 --> 00:28:00,482
<i>Chalk's mechanics had patched up
areas damaged by corrosion...</i>

383
00:28:01,310 --> 00:28:03,896
<i>...which is not unusual
for an aging aircraft,</i>

384
00:28:03,965 --> 00:28:05,862
<i>especially a seaplane.</i>

385
00:28:06,586 --> 00:28:10,275
The fact that they land
on water means that
their takeoff and landing loads

386
00:28:10,344 --> 00:28:12,862
are different than you would
have on a land-based airplane.

387
00:28:12,931 --> 00:28:14,655
Also, they're always in water,

388
00:28:14,724 --> 00:28:18,413
and the corrosive effects
of water are going to happen
more readily on those airplanes.

389
00:28:18,482 --> 00:28:22,137
<i>But when investigators examine
the rest of the Chalk's fleet,</i>

390
00:28:22,206 --> 00:28:26,103
<i>they find that the Mallards
are in far worse shape
than they imagined.</i>

391
00:28:27,172 --> 00:28:29,137
Corrosion repairs.

392
00:28:30,482 --> 00:28:32,793
Corrosion. Corrosion,

393
00:28:32,862 --> 00:28:34,758
corrosion, corrosion.

394
00:28:35,551 --> 00:28:37,206
Corrosion repairs.

395
00:28:38,896 --> 00:28:40,310
Lots of 'em.

396
00:28:42,689 --> 00:28:45,896
The accident airplane
and the other airplanes
in Chalk's fleet

397
00:28:45,965 --> 00:28:47,827
were rife
with maintenance issues.

398
00:28:47,896 --> 00:28:50,068
Corrosion was rampant
on all the airplanes.

399
00:28:50,137 --> 00:28:55,206
There was evidence
of shoddy maintenance practices
on all of their other airplanes.

400
00:28:56,448 --> 00:28:58,965
Many, many of the repairs...

401
00:28:59,034 --> 00:29:03,448
exhibited extremely poor
workmanship and quality;

402
00:29:03,517 --> 00:29:06,103
double,
triple drilling of holes;

403
00:29:06,172 --> 00:29:09,517
excessive grinding of corrosion,

404
00:29:09,586 --> 00:29:12,000
uh, scars on the material.

405
00:29:12,068 --> 00:29:15,413
And this involved
the structural repairs

406
00:29:15,482 --> 00:29:19,724
that were made to the aircraft
over the past few years.

407
00:29:21,517 --> 00:29:25,206
<i>Crookshanks's
attention is drawn to a section
of the lower right wing.</i>

408
00:29:26,068 --> 00:29:28,068
<i>There is a metal patch,</i>

409
00:29:28,137 --> 00:29:31,275
<i>called a doubler,
on the surface
of the wing's skin.</i>

410
00:29:33,448 --> 00:29:37,034
A doubler is simply
a sheet of metal
that goes overtop of the skin,

411
00:29:37,103 --> 00:29:42,413
and it acts as a load transfer,
it acts as a second piece
of skin to patch the crack.

412
00:29:42,482 --> 00:29:45,344
It's kind of like a patch
on a pair of jeans.

413
00:29:47,275 --> 00:29:49,068
This is a big repair job.

414
00:29:49,793 --> 00:29:51,793
You sure we don't have anything
on this?

415
00:29:56,034 --> 00:29:57,827
<i>It's an intriguing discovery.</i>

416
00:29:59,448 --> 00:30:03,758
<i>The patch is located
exactly where the wing broke off
from the rest of the plane.</i>

417
00:30:08,448 --> 00:30:11,517
<i>When he takes a closer look
at this section of the wing,</i>

418
00:30:11,586 --> 00:30:15,137
<i>Crookshanks notices
the edges are smooth and shiny,</i>

419
00:30:15,206 --> 00:30:18,655
<i>totally unlike the rough edges
he's been seeing
on other debris.</i>

420
00:30:20,103 --> 00:30:21,724
We gotta see
what's under this.

421
00:30:22,482 --> 00:30:25,172
<i>This crack
is not from overstress.</i>

422
00:30:26,655 --> 00:30:31,793
<i>Instead, Crookshanks suspects
it developed over many years
as the result of metal fatigue.</i>

423
00:30:34,034 --> 00:30:38,724
Metal fatigue is a process
by which any piece of metal,

424
00:30:38,793 --> 00:30:40,551
a wing spar or anything,

425
00:30:40,620 --> 00:30:42,896
is repetitively loaded
and unloaded.

426
00:30:42,965 --> 00:30:46,689
You can think of it as bending
a paperclip back and forth,
and everyone's done this,

427
00:30:46,758 --> 00:30:49,000
and after a while,
it eventually breaks.

428
00:30:49,068 --> 00:30:51,034
<i>Metal fatigue in the wings</i>

429
00:30:51,103 --> 00:30:54,758
<i>is caused by the stress
of flight over the lifetime
of the aircraft.</i>

430
00:30:55,931 --> 00:30:59,724
In the case of this aircraft,
every time it took off,
the wing is loaded.

431
00:30:59,793 --> 00:31:02,862
That's lift
that gets the airplane
up into the air.

432
00:31:02,931 --> 00:31:05,344
Every time it lands,
the wing is now unloaded,

433
00:31:05,413 --> 00:31:08,103
and there's no more stress
on the wing structure anymore.

434
00:31:08,172 --> 00:31:10,827
That's just like bending
that paperclip back and forth.

435
00:31:13,724 --> 00:31:18,137
<i>Crookshanks is eager
to find out what's underneath
the metal patch.</i>

436
00:31:26,758 --> 00:31:29,068
Okay, let's see
what this doubler's hiding.

437
00:31:32,034 --> 00:31:34,344
<i>They find
even more metal fatigue.</i>

438
00:31:35,724 --> 00:31:38,000
<i>Deep cracks cut across the wing.</i>

439
00:31:40,689 --> 00:31:42,724
<i>The extent of the damage
is staggering.</i>

440
00:31:44,517 --> 00:31:46,310
<i>A crack 40 centimetres long.</i>

441
00:31:47,310 --> 00:31:48,793
Man, oh, man.

442
00:31:54,689 --> 00:31:56,586
<i>Investigating further,</i>

443
00:31:56,655 --> 00:31:59,000
<i>Crookshanks makes
another disturbing find.</i>

444
00:32:03,172 --> 00:32:06,793
Three machine holes
in the skin
forward of the leading edge.

445
00:32:06,862 --> 00:32:09,448
All three appear
to be stop drill holes.

446
00:32:13,517 --> 00:32:16,068
<i>The holes indicate
that Chalk's mechanics
had been trying</i>

447
00:32:16,137 --> 00:32:18,413
<i>to stop the crack
from spreading further.</i>

448
00:32:22,896 --> 00:32:24,448
<i>Years earlier,</i>

449
00:32:24,517 --> 00:32:27,689
<i>a mechanic had spotted the crack
on the lower surface
of the wing.</i>

450
00:32:33,620 --> 00:32:37,137
<i>He repaired it
by drilling a hole
in the path of the crack.</i>

451
00:32:37,206 --> 00:32:39,275
<i>It's called a stop drill hole.</i>

452
00:32:40,344 --> 00:32:41,827
The end of a crack,

453
00:32:41,896 --> 00:32:46,068
you could see
even with the naked eye,
is sharp, it comes to a point.

454
00:32:46,137 --> 00:32:48,862
That tends to want
to develop a crack more.

455
00:32:48,931 --> 00:32:50,931
By drilling a hole
at the end of the crack,

456
00:32:51,000 --> 00:32:52,724
that would spread out
the stress,

457
00:32:52,793 --> 00:32:56,620
and the idea is to stop
the growth of the crack there.

458
00:32:59,448 --> 00:33:02,000
<i>But the stop drill holes
didn't work.</i>

459
00:33:04,379 --> 00:33:07,103
An attempt was made
to repair that skin
on three different occasions

460
00:33:07,172 --> 00:33:09,241
by stop drilling.

461
00:33:09,310 --> 00:33:13,965
<i>Even as mechanics
put in more holes,
the crack kept growing.</i>

462
00:33:15,620 --> 00:33:17,896
After the third stop drill,

463
00:33:17,965 --> 00:33:20,137
an attempt was made
to further repair the wing

464
00:33:20,206 --> 00:33:23,241
by attaching doublers
on the interior and exterior
surface of the skin.

465
00:33:24,517 --> 00:33:27,620
<i>But the doublers
didn't work either.</i>

466
00:33:27,689 --> 00:33:30,655
<i>The crack on the plane's skin
continued to grow.</i>

467
00:33:34,172 --> 00:33:37,413
<i>Investigators now know
the right wing was damaged</i>

468
00:33:37,482 --> 00:33:39,551
<i>long before the day
of the accident.</i>

469
00:33:47,448 --> 00:33:50,758
<i>What they don't understand
is why the crack
could not be stopped.</i>

470
00:33:51,896 --> 00:33:54,413
Approved?
<i>But a glimmer
of an answer comes</i>

471
00:33:54,482 --> 00:33:57,034
<i>when they learn the plane
was sending out warning signs</i>

472
00:33:57,103 --> 00:33:59,310
<i>of a deeper,
more serious problem.</i>

473
00:34:00,000 --> 00:34:02,379
The Chalk's airplane
involved in the accident

474
00:34:02,448 --> 00:34:06,034
was showing evidence
of chronic fuel leaks
for many years.

475
00:34:07,241 --> 00:34:08,793
<i>According to the log,</i>

476
00:34:08,862 --> 00:34:12,827
<i>fuel leaks from the right wing
were repaired again and again.</i>

477
00:34:12,896 --> 00:34:14,551
<i>But they kept happening.</i>

478
00:34:15,034 --> 00:34:17,103
The crews started to notice
repeated fuel leaks

479
00:34:17,172 --> 00:34:19,413
during standard operations,

480
00:34:19,482 --> 00:34:23,758
and we tried to bring it up
to the attention of management
just for our concerns.

481
00:34:25,448 --> 00:34:29,103
<i>Just two days before the crash,
it happened again.</i>

482
00:34:29,965 --> 00:34:32,275
<i>While doing routine maintenance
on the Mallard,</i>

483
00:34:32,344 --> 00:34:35,310
<i>a mechanic came across fuel
dripping from the right wing.</i>

484
00:34:38,310 --> 00:34:41,034
They always addressed
the problem with trying
to reseal the fuel tanks,

485
00:34:41,103 --> 00:34:43,517
or trying to fix whatever
problem they thought they had.

486
00:34:43,586 --> 00:34:45,655
It always seemed to be
a reoccurring issue.

487
00:34:47,758 --> 00:34:50,413
<i>The procedure
for plugging a leak</i>

488
00:34:50,482 --> 00:34:53,586
<i>was to apply a chemical sealant
to the inside
of the empty fuel tank.</i>

489
00:34:57,344 --> 00:34:59,413
<i>The sealant would take a day
to dry.</i>

490
00:35:00,758 --> 00:35:03,827
<i>Then the plane
could be refuelled
and returned to service.</i>

491
00:35:07,551 --> 00:35:09,206
<i>The leaks should've been a clue</i>

492
00:35:09,275 --> 00:35:13,517
<i>that the crack
in the wing skin
was just the tip of the iceberg,</i>

493
00:35:13,586 --> 00:35:16,241
<i>that there was a much more
dangerous problem</i>

494
00:35:16,310 --> 00:35:17,931
<i>with the wing's
interior structure.</i>

495
00:35:18,931 --> 00:35:21,275
Fuel leaks
in this particular aircraft

496
00:35:21,344 --> 00:35:24,551
are indicative of a problem
with the wing structure.

497
00:35:24,620 --> 00:35:29,689
In fact, Grumman put out a...
service bulletin back in 1963

498
00:35:29,758 --> 00:35:33,344
that warned mechanics
chronic fuel leaks
are an indicator

499
00:35:33,413 --> 00:35:36,103
of a structural issue
with the aircraft.

500
00:35:39,379 --> 00:35:42,310
Okay, let's what we got here.

501
00:35:44,758 --> 00:35:48,241
<i>Crookshanks examines
the pieces that make up
the right fuel tank.</i>

502
00:35:49,551 --> 00:35:51,068
Some kind of sealant.

503
00:35:52,310 --> 00:35:54,586
<i>He wonders
why the fuel leaks persisted</i>

504
00:35:54,655 --> 00:35:57,137
<i>in spite of the constant efforts
to repair them.</i>

505
00:35:58,827 --> 00:36:01,724
Hand me that scraper, please.
Thank you.

506
00:36:06,000 --> 00:36:08,827
<i>Beneath the layers of sealant,
he finds his answer.</i>

507
00:36:12,896 --> 00:36:14,862
Bingo.

508
00:36:14,931 --> 00:36:18,172
<i>Cracks in a critical support beam
called a Z-stringer.</i>

509
00:36:18,241 --> 00:36:21,724
<i>It's the piece
that the plane's skin
was directly attached to.</i>

510
00:36:21,793 --> 00:36:25,413
Alright. Will you finish
cleaning this off,
then get some pictures, okay?

511
00:36:25,482 --> 00:36:27,000
Thank you.

512
00:36:31,620 --> 00:36:33,137
<i>Crookshanks finds evidence</i>

513
00:36:33,206 --> 00:36:36,310
<i>that Chalk's mechanics had tried
to repair the stringer.</i>

514
00:36:37,275 --> 00:36:42,000
It appears that they did
some grinding on this Z-stringer
to remove a fatigue crack.

515
00:36:45,482 --> 00:36:48,827
However, they never went back in
and reinspected that area.

516
00:36:50,758 --> 00:36:54,000
<i>Instead, they only applied
chemical sealant to the area</i>

517
00:36:54,068 --> 00:36:55,620
<i>to make it leak-proof.</i>

518
00:36:57,068 --> 00:36:59,379
<i>And in the process,
concealed the damage.</i>

519
00:37:01,896 --> 00:37:04,206
Chalk's made repeated efforts
to repair the airplane

520
00:37:04,275 --> 00:37:06,689
by stop-drilling
the wing-skin cracks,

521
00:37:06,758 --> 00:37:09,551
adding doublers
overtop of the cracks,

522
00:37:09,620 --> 00:37:13,586
but they never addressed
the root of the problem,
which is the cracked Z-stringer.

523
00:37:13,655 --> 00:37:18,379
The reason they couldn't address
the Z-stringer is it was covered
in fuel-tank sealant.

524
00:37:20,068 --> 00:37:23,827
<i>The broken Z-stringer
weakened the entire wing.</i>

525
00:37:23,896 --> 00:37:25,896
<i>Now with every takeoff
and landing,</i>

526
00:37:25,965 --> 00:37:28,344
<i>the plane's skin was absorbing
the forces.</i>

527
00:37:29,413 --> 00:37:32,068
<i>Over time,
the skin began to crack,
as well.</i>

528
00:37:35,689 --> 00:37:37,620
<i>The final outcome
was inevitable.</i>

529
00:37:38,965 --> 00:37:42,137
The fatigue cracking
reached critical length,

530
00:37:42,206 --> 00:37:44,689
and the wing separated
from the airplane.

531
00:38:01,517 --> 00:38:03,413
<i>Investigators conclude
that a hidden crack</i>

532
00:38:03,482 --> 00:38:05,793
<i>in a key component
of the right wing</i>

533
00:38:05,862 --> 00:38:08,689
<i>led to the devastating crash
of Flight 101.</i>

534
00:38:13,827 --> 00:38:16,413
<i>Chalk's failure to identify
such a serious problem</i>

535
00:38:16,482 --> 00:38:20,379
<i>now forces investigators
to re-examine
the airline's long history.</i>

536
00:38:23,724 --> 00:38:25,482
<i>Chalk's Ocean Airways
had an image</i>

537
00:38:25,551 --> 00:38:28,068
<i>as one of the safest airlines
in the world.</i>

538
00:38:29,000 --> 00:38:31,241
<i>Despite the age of their fleet,</i>

539
00:38:31,310 --> 00:38:36,000
<i>the airline had
an outstanding record of safety
dating back almost 90 years.</i>

540
00:38:37,344 --> 00:38:38,896
Chalk's safety record
was great.

541
00:38:38,965 --> 00:38:41,965
They had never lost a passenger
in all their years of operation.

542
00:38:42,827 --> 00:38:46,413
Chalk was an old,
established company,

543
00:38:46,482 --> 00:38:49,827
but it seems to me
that somewhere along the line,

544
00:38:49,896 --> 00:38:53,103
the management
and the quality of the work done

545
00:38:53,172 --> 00:38:56,448
had slipped quite a bit
from in the past years.

546
00:38:57,827 --> 00:39:00,620
What have you got
on the financial state
of this company?

547
00:39:01,931 --> 00:39:03,793
<i>Investigators are beginning to suspect</i>

548
00:39:03,862 --> 00:39:06,275
<i>that the company's reputation
for safety</i>

549
00:39:06,344 --> 00:39:09,965
<i>may have been undermined
in recent years
by money problems.</i>

550
00:39:10,586 --> 00:39:12,310
Financial issues
in an airline,

551
00:39:12,379 --> 00:39:13,965
especially a small carrier
like this,

552
00:39:14,034 --> 00:39:15,758
can manifest themselves
in many ways.

553
00:39:15,827 --> 00:39:18,689
Personnel are sometimes
one of the first things to go.

554
00:39:19,517 --> 00:39:22,965
<i>A search
of Chalk's financial history
uncovers some trouble.</i>

555
00:39:24,862 --> 00:39:27,689
<i>In the 1980s,
Chalk's went through
a string of owners</i>

556
00:39:27,758 --> 00:39:30,241
<i>before going bankrupt in 1999.</i>

557
00:39:34,172 --> 00:39:37,206
<i>The airline was revived
by a Miami businessman,</i>

558
00:39:37,275 --> 00:39:38,896
<i>but it kept losing money.</i>

559
00:39:43,517 --> 00:39:45,448
<i>Just a few months
before the crash,</i>

560
00:39:45,517 --> 00:39:48,103
<i>the last attempt to sell
the business fell through.</i>

561
00:39:50,931 --> 00:39:52,448
Not doing so well.

562
00:39:53,896 --> 00:39:56,827
It wasn't a secret
that we were having
financial difficulty.

563
00:39:56,896 --> 00:40:00,724
The pilots had taken pay cuts
and the captains
had taken concessions,

564
00:40:00,793 --> 00:40:03,724
and we downsized a lot
as far as personnel.

565
00:40:03,793 --> 00:40:06,689
<i>It wasn't just personnel
that felt the pinch.</i>

566
00:40:07,862 --> 00:40:12,344
It was difficult for Chalk's
to find spare parts
and do some of their repairs.

567
00:40:12,413 --> 00:40:16,034
Chalk's had a number
of other un-flyable aircraft
that they owned

568
00:40:16,103 --> 00:40:18,655
that they would cannibalize
for spare parts.

569
00:40:19,413 --> 00:40:23,758
There were only maybe 50
or 55 aircraft that were built.

570
00:40:23,827 --> 00:40:27,310
In that case,
the original manufacturer,
Grumman,

571
00:40:27,379 --> 00:40:29,896
was no longer in production
of that aircraft,

572
00:40:29,965 --> 00:40:31,931
they no longer supplied parts.

573
00:40:33,068 --> 00:40:34,896
<i>The airline's
deteriorating health</i>

574
00:40:34,965 --> 00:40:38,448
<i>and the shortage of spare parts
had a direct impact on safety.</i>

575
00:40:40,172 --> 00:40:45,827
There's so much regulation
and there's so much necessity
to make the airplane fly,

576
00:40:45,896 --> 00:40:50,965
it's hard to skimp
on maintenance
and not impact reliability.

577
00:40:51,034 --> 00:40:52,689
And if you don't have
reliability,

578
00:40:52,758 --> 00:40:54,724
then you're just spiralling
downhill.

579
00:40:55,965 --> 00:40:59,655
<i>But no matter
how tight the finances were,
as a commercial airline,</i>

580
00:40:59,724 --> 00:41:04,000
<i>Chalk's should've been closely
monitored by the Federal
Aviation Administration.</i>

581
00:41:08,551 --> 00:41:12,862
<i>In fact, the FAA did assign
an inspector to work closely
with Chalk's.</i>

582
00:41:15,413 --> 00:41:17,034
The FAA inspector,

583
00:41:17,103 --> 00:41:19,862
which is called a Principal
Maintenance Inspector,

584
00:41:19,931 --> 00:41:23,517
was responsible
for the oversight
of the maintenance program

585
00:41:23,586 --> 00:41:25,896
as carried out by Chalk.

586
00:41:27,379 --> 00:41:29,827
<i>The inspector was aware
the plane was suffering</i>

587
00:41:29,896 --> 00:41:31,793
<i>from chronic fuel leaks.</i>

588
00:41:33,758 --> 00:41:36,206
<i>And yet, inexplicably,</i>

589
00:41:36,275 --> 00:41:38,344
<i>he gave Chalk's
a clean bill of health</i>

590
00:41:38,413 --> 00:41:40,758
<i>just two months
before the crash.</i>

591
00:41:47,827 --> 00:41:49,379
What was this guy doing?

592
00:41:53,344 --> 00:41:55,896
<i>Investigators are at a loss
to explain</i>

593
00:41:55,965 --> 00:41:59,448
<i>why the FAA inspector
didn't pick up on warning signs</i>

594
00:41:59,517 --> 00:42:01,517
<i>the Chalk's seaplane
was giving off.</i>

595
00:42:03,689 --> 00:42:06,965
The fact that Chalk
was an old, established carrier,

596
00:42:07,034 --> 00:42:08,586
maybe they just accepted:

597
00:42:08,655 --> 00:42:12,655
Well, there's only two
or three planes,
it's a small operation...

598
00:42:13,344 --> 00:42:15,655
...they only fly
during the nice weather,

599
00:42:15,724 --> 00:42:17,517
and, uh...

600
00:42:17,586 --> 00:42:19,655
they're good old boys
over there,

601
00:42:19,724 --> 00:42:21,310
they know what they're doing.

602
00:42:21,379 --> 00:42:24,137
In effect,
the FAA didn't step back

603
00:42:24,206 --> 00:42:26,413
and take a look at that forest
for the trees

604
00:42:26,482 --> 00:42:30,137
and find out
just what's going on
in the maintenance program

605
00:42:30,206 --> 00:42:32,551
with these Chalk's aircraft.

606
00:42:33,758 --> 00:42:36,724
<i>The FAA may not have found fault
with Chalk's,</i>

607
00:42:36,793 --> 00:42:40,793
<i>but it turns out
that several people
very close to the airline did.</i>

608
00:42:43,103 --> 00:42:47,103
We did talk to this group
of pilots who had left Chalk's
prior to the accident.

609
00:42:47,931 --> 00:42:50,586
And every single one of them
did have some story

610
00:42:50,655 --> 00:42:53,931
about maintenance aspects
on their aircraft.

611
00:42:54,000 --> 00:42:57,931
Whether it had to do
with fuel leaks
or other maintenance aspects,

612
00:42:58,000 --> 00:42:59,758
they all had some...

613
00:42:59,827 --> 00:43:04,068
level of concern about the way
Chalk's was taking care
of these very old airplanes.

614
00:43:06,172 --> 00:43:08,517
<i>In fact,
the pilots were so concerned,</i>

615
00:43:08,586 --> 00:43:11,034
<i>that in the year
leading up to the crash,</i>

616
00:43:11,103 --> 00:43:14,620
<i>many of them met
to discuss the problem
of declining maintenance.</i>

617
00:43:15,586 --> 00:43:19,310
The captains of the company
decided it would be best for us
to get together as a group,

618
00:43:19,379 --> 00:43:23,275
discuss the issues that we had,
to try to get
our concerns addressed.

619
00:43:23,344 --> 00:43:24,896
One major issue
that had happened,

620
00:43:24,965 --> 00:43:28,137
we had an elevator cable
that had snapped in flight,

621
00:43:28,206 --> 00:43:31,448
and the crew luckily was able
to get the airplane down

622
00:43:31,517 --> 00:43:34,172
using power
and different settings
and shifting people.

623
00:43:34,241 --> 00:43:38,241
But in most scenarios,
that would've been an accident
in itself.

624
00:43:39,000 --> 00:43:41,172
In aviation,
there's error chains
that they talk about,

625
00:43:41,241 --> 00:43:44,586
and if you keep compiling
one link after another,

626
00:43:44,655 --> 00:43:47,551
it's only a matter of time
before an accident will occur.

627
00:43:47,620 --> 00:43:49,896
And from my point of view,

628
00:43:49,965 --> 00:43:53,827
I thought that if they kept
going down the same road
that they were going down,

629
00:43:53,896 --> 00:43:55,758
something could happen.

630
00:43:57,379 --> 00:44:01,344
<i>Eventually,
Captain Weber decided
he'd seen enough close calls.</i>

631
00:44:02,275 --> 00:44:04,965
My turning point,
and why I decided
to leave Chalk's,

632
00:44:05,034 --> 00:44:08,793
was I just had seen too many
things in the recent months,

633
00:44:08,862 --> 00:44:12,310
too many mechanical issues
that were major issues
in my mind.

634
00:44:12,379 --> 00:44:14,827
And I had three engine failures
myself that year.

635
00:44:14,896 --> 00:44:17,103
And I had a wife at home
that was pregnant.

636
00:44:17,172 --> 00:44:21,862
I had lost I guess my confidence
in the company's ability
or the airplane,

637
00:44:21,931 --> 00:44:23,482
and I had just had enough.

638
00:44:27,413 --> 00:44:30,931
<i>The NTSB's report
on the crash of Flight 101</i>

639
00:44:31,000 --> 00:44:33,448
<i>harshly criticizes the FAA</i>

640
00:44:33,517 --> 00:44:37,103
<i>for not detecting growing
maintenance and financial
problems at Chalk's.</i>

641
00:44:41,586 --> 00:44:45,655
Had the maintenance program
or the FAA stepped back
and said,

642
00:44:45,724 --> 00:44:50,206
"These aircraft need more
than just a one-time fix,

643
00:44:50,275 --> 00:44:52,482
they need something
much deeper than this,"

644
00:44:52,551 --> 00:44:54,758
the accident probably
would not have happened.

645
00:44:56,310 --> 00:45:00,827
<i>It also uncovers
a loophole in the FAA's
aging aircraft regulations,</i>

646
00:45:00,896 --> 00:45:03,896
<i>which require extra inspections
for older planes.</i>

647
00:45:06,413 --> 00:45:08,931
<i>But those rules didn't apply
to Mallards.</i>

648
00:45:11,896 --> 00:45:15,344
The Grumman Mallard
was manufactured in 1947.

649
00:45:15,413 --> 00:45:17,931
It only carried 17 passengers,

650
00:45:18,000 --> 00:45:20,793
and it was not
a transport-category airplane.

651
00:45:20,862 --> 00:45:24,068
Therefore, it was exempt from
the supplemental inspections.

652
00:45:24,137 --> 00:45:27,724
What we have here
is the FAA has made
an aging airplane safety rule

653
00:45:27,793 --> 00:45:30,931
and they've exempted the oldest
airplanes in the fleet.

654
00:45:33,068 --> 00:45:38,000
<i>The NTSB recommends
that the FAA expand
its oversight of aging planes.</i>

655
00:45:41,931 --> 00:45:44,344
When we determine
the probable cause
of an air crash,

656
00:45:44,413 --> 00:45:46,206
the point is to do this

657
00:45:46,275 --> 00:45:49,586
so that similar accidents
won't happen again
in the future.

658
00:45:50,137 --> 00:45:52,689
I think we've used this accident

659
00:45:52,758 --> 00:45:54,896
to point towards...

660
00:45:54,965 --> 00:45:57,586
the industry and the FAA

661
00:45:57,655 --> 00:46:00,310
to make sure they take a look
at the overall picture

662
00:46:00,379 --> 00:46:02,620
of what's going on
at an air carrier.

663
00:46:07,137 --> 00:46:10,620
<i>Flight 101 spelled the end
of Chalk's Ocean Airways.</i>

664
00:46:19,758 --> 00:46:22,000
<i>A few months after the report
was released,</i>

665
00:46:22,068 --> 00:46:23,931
<i>the airline shut down.</i>

666
00:46:27,689 --> 00:46:31,206
There was a lot of history
and a lot of family, community,

667
00:46:31,275 --> 00:46:34,103
involved with the passengers
as well as the people
in the airline.

668
00:46:35,620 --> 00:46:39,379
So to see the whole airline
and everything else kind of go
down with the airplane

669
00:46:39,448 --> 00:46:42,275
is additionally emotional...

670
00:46:42,344 --> 00:46:45,655
for everybody
that ever worked there
or ever loved the airplanes.

671
00:46:59,724 --> 00:47:01,827
difuze


