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1
00:00:02,502 --> 00:00:03,336
A scene of devastation
2
00:00:03,403 --> 00:00:05,705
in a remote region of Venezuela
3
00:00:05,772 --> 00:00:08,375
confirms the fate
of a missing passenger jet.
4
00:00:11,411 --> 00:00:13,847
West Caribbean Airways
flight 708
5
00:00:13,913 --> 00:00:16,449
has mysteriously dropped
from the sky
6
00:00:16,516 --> 00:00:19,686
while flying
at over 30,000 feet.
7
00:00:19,753 --> 00:00:21,121
It took off from Panama.
8
00:00:21,187 --> 00:00:22,522
It's a Colombian operator.
9
00:00:22,589 --> 00:00:25,959
There was 160 french citizens
on board.
10
00:00:26,025 --> 00:00:28,762
It's the biggest accident
that has ever occurred
11
00:00:28,828 --> 00:00:30,330
in Venezuelan territory.
12
00:00:30,397 --> 00:00:31,564
Investigators hope
13
00:00:31,631 --> 00:00:33,066
the crew's desperate
last words...
14
00:00:33,133 --> 00:00:34,167
West 708.
15
00:00:34,234 --> 00:00:35,635
Do you have
a problem on board?
16
00:00:35,702 --> 00:00:37,604
...will help them
pinpoint the cause of the crash.
17
00:00:37,670 --> 00:00:38,872
Affirmative.
18
00:00:38,938 --> 00:00:41,474
Tell them we've had a flameout
on both engines.
19
00:00:41,541 --> 00:00:44,911
But instead
the mystery deepens.
20
00:00:44,978 --> 00:00:46,379
It's a stall, captain.
21
00:00:46,446 --> 00:00:47,914
It's a stall.
22
00:00:47,981 --> 00:00:49,349
The pilots can't agree
23
00:00:49,416 --> 00:00:51,284
on why the plane is falling.
24
00:00:53,887 --> 00:00:57,157
Now it's up to investigators
to figure it out.
25
00:00:59,025 --> 00:01:00,093
Ladies and gentlemen,
26
00:01:00,160 --> 00:01:01,127
we are starting our approach.
27
00:01:01,194 --> 00:01:02,362
We lost both engines!
28
00:01:02,429 --> 00:01:03,563
Put the mask over your nose.
29
00:01:03,630 --> 00:01:04,564
Emergency descent.
30
00:01:04,631 --> 00:01:05,632
Mayday, mayday.
31
00:01:05,698 --> 00:01:07,667
Brace for impact!
32
00:01:07,734 --> 00:01:08,701
I think I lost one.
33
00:01:08,768 --> 00:01:10,503
Investigation starting...
34
00:01:11,905 --> 00:01:13,473
He's gonna crash!
35
00:01:35,161 --> 00:01:38,031
At Panama's
Tocumen International Airport,
36
00:01:38,097 --> 00:01:40,467
West Caribbean Airways
flight 708
37
00:01:40,533 --> 00:01:43,536
begins boarding
two hours behind schedule.
38
00:01:47,173 --> 00:01:49,142
It's past midnight.
39
00:01:49,209 --> 00:01:52,145
The 152 passengers
on this charter flight
40
00:01:52,212 --> 00:01:54,747
are returning home
to Martinique.
41
00:01:54,814 --> 00:01:57,383
They've been visiting
the Panama Canal.
42
00:02:00,253 --> 00:02:02,455
Captain Omar Ospina
has just flown in
43
00:02:02,522 --> 00:02:05,024
with his crew from Colombia.
44
00:02:05,091 --> 00:02:09,696
As he's behind schedule, he must
turn the plane around quickly.
45
00:02:09,762 --> 00:02:13,032
But there are more
unexpected delays.
46
00:02:13,099 --> 00:02:15,435
First officer David Muñoz
informs the captain
47
00:02:15,502 --> 00:02:18,104
that the flight is overbooked.
48
00:02:18,171 --> 00:02:22,075
Even the jump seat
in the cockpit is filled.
49
00:02:22,141 --> 00:02:23,977
Let me deal with it.
50
00:02:24,043 --> 00:02:25,478
Alejo, I need you on board
51
00:02:25,545 --> 00:02:27,347
to do the announcements
in Spanish and English.
52
00:02:27,413 --> 00:02:28,414
Yes, sir.
53
00:02:28,481 --> 00:02:29,682
Angela and Luisa
can stay behind.
54
00:02:29,749 --> 00:02:31,184
I'll let them know.
55
00:02:31,251 --> 00:02:32,452
Two of
the flight attendants
56
00:02:32,519 --> 00:02:33,720
will stay in Panama
57
00:02:33,786 --> 00:02:37,290
because there's not
enough room on board.
58
00:02:37,357 --> 00:02:39,459
Sir, we just got
the final load sheet.
59
00:02:44,063 --> 00:02:45,598
Checking the weight
of the aircraft...
60
00:02:45,665 --> 00:02:47,634
Take off
from runway 21 left, sir.
61
00:02:47,700 --> 00:02:48,735
3,050 meters.
62
00:02:48,801 --> 00:02:50,570
...and the length of runway,
63
00:02:50,637 --> 00:02:54,607
Captain Ospina calculates that
he can safely get airborne.
64
00:02:57,410 --> 00:03:00,813
Their flight path will take them
through some heavy weather,
65
00:03:00,880 --> 00:03:04,484
something crews are accustomed
to during hurricane season.
66
00:03:04,551 --> 00:03:06,185
Okay, we're ready
for takeoff.
67
00:03:06,252 --> 00:03:08,054
Request pushback clearance.
68
00:03:08,121 --> 00:03:10,523
Ground,
West Caribbean Airways 708
69
00:03:10,590 --> 00:03:13,459
request pushback clearance,
gate 28.
70
00:03:13,526 --> 00:03:17,163
West Caribbean 708,
cleared for pushback, gate 28.
71
00:03:20,867 --> 00:03:23,436
Proceed to runway 21 left.
72
00:03:29,676 --> 00:03:32,145
West Caribbean 708
runway 21 left
73
00:03:32,211 --> 00:03:34,380
cleared for takeoff.
74
00:03:48,328 --> 00:03:50,964
V-1.
75
00:03:51,030 --> 00:03:52,966
Rotate.
76
00:03:56,069 --> 00:03:57,236
At 1:00 in the morning,
77
00:03:57,303 --> 00:04:01,374
flight 708 begins
the journey to Martinique.
78
00:04:01,441 --> 00:04:03,176
They took off
from Panama Airport,
79
00:04:03,242 --> 00:04:05,211
Tocumen Airport,
80
00:04:05,278 --> 00:04:09,582
with a heavy load for a long
flight for that aircraft.
81
00:04:12,118 --> 00:04:14,954
The flight
should take three hours.
82
00:04:15,021 --> 00:04:17,323
They climb
up to 31,000 feet,
83
00:04:17,390 --> 00:04:21,561
their initial
assigned flight level.
84
00:04:21,628 --> 00:04:23,630
They have filed a flight plan
85
00:04:23,696 --> 00:04:26,666
with a final cruise level
of 3-3-0--
86
00:04:26,733 --> 00:04:29,502
33,000 feet.
87
00:04:29,569 --> 00:04:34,440
The crew
is flying an MD-80.
88
00:04:34,507 --> 00:04:38,177
The plane is easily recognizable
by its two rear-mounted engines.
89
00:04:38,244 --> 00:04:41,981
The MD-80 aircraft
is a very good aircraft.
90
00:04:42,048 --> 00:04:46,653
It's a model that was derived
from the DC-9.
91
00:04:46,719 --> 00:04:49,822
They made it longer,
more fuel efficient
92
00:04:49,889 --> 00:04:54,193
and more modern
instrumentation and avionics.
93
00:04:54,260 --> 00:04:56,029
Anti-ice on, please.
94
00:04:56,095 --> 00:04:59,198
As altitude increases
and temperature drops,
95
00:04:59,265 --> 00:05:02,068
they activate the plane's
anti-ice system.
96
00:05:05,738 --> 00:05:09,742
Half an hour into the flight,
while cruising at 31,000 feet,
97
00:05:09,809 --> 00:05:14,013
the weather ahead
is turning nasty.
98
00:05:14,080 --> 00:05:17,216
A low-intensity hurricane
moving in from the Atlantic
99
00:05:17,283 --> 00:05:19,986
is whipping up winds
across the region.
100
00:05:22,889 --> 00:05:25,491
Request deviation left.
101
00:05:25,558 --> 00:05:28,261
Barranquilla,
West 708, request deviation
102
00:05:28,327 --> 00:05:29,829
to the left to avoid formation.
103
00:05:29,896 --> 00:05:33,166
West Caribbean 708
cleared to deviate left.
104
00:05:39,305 --> 00:05:40,707
In the kind of weather
they were flying,
105
00:05:40,773 --> 00:05:44,777
it's common for pilots to
deviate from their initial route
106
00:05:44,844 --> 00:05:47,013
to avoid this bad weather.
107
00:05:49,615 --> 00:05:51,784
It should get better soon.
108
00:05:59,892 --> 00:06:01,694
40 minutes into the flight
109
00:06:01,761 --> 00:06:04,764
the plane has burned through
thousands of pounds of fuel,
110
00:06:04,831 --> 00:06:06,899
allowing it to fly higher.
111
00:06:06,966 --> 00:06:08,334
In order
to reduce weight,
112
00:06:08,401 --> 00:06:11,037
they had to climb
to 31,000 feet,
113
00:06:11,104 --> 00:06:13,272
wait until the weight goes down
114
00:06:13,339 --> 00:06:17,510
and then do a step climb
up to 33,000 feet.
115
00:06:17,577 --> 00:06:19,045
Let's do 3-3-0.
116
00:06:19,112 --> 00:06:21,614
3-3-0.
117
00:06:21,681 --> 00:06:25,685
Barranquilla, West 708
request level 3-3-0.
118
00:06:25,752 --> 00:06:29,889
708 cleared
to level 3-3-0.
119
00:06:29,956 --> 00:06:31,624
The captain
now begins the climb
120
00:06:31,691 --> 00:06:35,061
to their scheduled altitude
of 33,000 feet.
121
00:06:47,306 --> 00:06:49,008
Turn off
engine anti-icing.
122
00:07:03,222 --> 00:07:04,757
I can't accelerate.
123
00:07:07,193 --> 00:07:09,128
The captain notices
that the engines
124
00:07:09,195 --> 00:07:12,632
don't seem to be responding.
125
00:07:12,698 --> 00:07:14,934
I'm going to the bathroom.
126
00:07:15,001 --> 00:07:18,271
The crew isn't
overly concerned.
127
00:07:20,940 --> 00:07:23,843
Almost a third of the way
to Martinique,
128
00:07:23,910 --> 00:07:27,880
West Caribbean flight 708
enters Venezuelan airspace.
129
00:07:34,020 --> 00:07:36,322
Is there cake and coffee
for everybody?
130
00:07:36,389 --> 00:07:38,424
Or are we expected
to share?
131
00:07:43,262 --> 00:07:44,931
As the storm intensifies,
132
00:07:44,997 --> 00:07:48,568
first officer Muñoz
worries about icing.
133
00:07:48,634 --> 00:07:51,904
-Do I turn it on, captain?
-Do we have ice?
134
00:08:02,014 --> 00:08:03,349
Put 'em on.
135
00:08:17,230 --> 00:08:20,533
Soon the turbulence gets worse.
136
00:08:20,600 --> 00:08:23,269
Man, that is a lot
of nasty weather.
137
00:08:23,336 --> 00:08:25,605
Put the fasten seatbelt sign on.
138
00:08:39,619 --> 00:08:42,421
Please stay in your seat.
139
00:08:46,392 --> 00:08:49,395
I'm dimming the lights so
the passengers don't stand up.
140
00:08:53,933 --> 00:08:57,303
Should we go down
to level 3-1-0?
141
00:08:57,370 --> 00:09:00,072
Do it.
142
00:09:00,139 --> 00:09:01,474
Maiquetia, Whisky-Charlie.
143
00:09:01,540 --> 00:09:03,442
The Maiquetia
Air Traffic Control Station
144
00:09:03,509 --> 00:09:06,979
in Venezuela
isn't equipped with radar.
145
00:09:07,046 --> 00:09:09,849
Request descent
to level 3-1-0.
146
00:09:09,916 --> 00:09:11,684
The controller
depends on pilots
147
00:09:11,751 --> 00:09:13,185
to tell him where they are.
148
00:09:13,252 --> 00:09:15,621
3-1-0.
149
00:09:15,688 --> 00:09:18,024
Captain Ospina
turns off the autopilot...
150
00:09:18,090 --> 00:09:19,959
Give me 3-1-0.
151
00:09:20,026 --> 00:09:21,694
...and the plane
starts heading back down
152
00:09:21,761 --> 00:09:23,629
to 31,000 feet.
153
00:09:26,465 --> 00:09:29,268
The turbulence is getting
even heavier...
154
00:09:30,770 --> 00:09:33,572
...and then suddenly
the stick shaker goes off.
155
00:09:33,639 --> 00:09:37,743
It's the most serious warning
that a crew can get.
156
00:09:37,810 --> 00:09:40,413
The captain's control column
starts to vibrate,
157
00:09:40,479 --> 00:09:44,817
warning him the plane is flying
dangerously slow.
158
00:09:44,884 --> 00:09:48,788
At close to 31,000 feet,
the plane suddenly drops.
159
00:09:56,862 --> 00:09:59,031
It's a stall, captain!
160
00:09:59,098 --> 00:10:00,733
It's a stall!
161
00:10:00,800 --> 00:10:02,902
The plane is falling fast.
162
00:10:02,969 --> 00:10:06,005
The crew has only seconds
to figure out why.
163
00:10:09,709 --> 00:10:15,614
West 708,
level down to level 2-4-0.
164
00:10:15,681 --> 00:10:17,516
Descending to 2-4-0.
165
00:10:17,583 --> 00:10:18,751
Do you have a problem on board?
166
00:10:18,818 --> 00:10:20,186
Affirmative.
167
00:10:20,252 --> 00:10:22,955
Tell him we've had
a flameout on both engines.
168
00:10:23,022 --> 00:10:25,157
We've had a flameout
on both engines.
169
00:10:25,224 --> 00:10:26,359
Confirm?
170
00:10:26,425 --> 00:10:28,227
We've had a flameout
on both engines!
171
00:10:28,294 --> 00:10:29,762
Roger.
172
00:10:29,829 --> 00:10:33,666
Confirm radial and distance
from Punto Cabello if possible.
173
00:10:33,733 --> 00:10:36,268
The controller
needs to know where they are.
174
00:10:38,871 --> 00:10:40,006
Negative! Negative!
175
00:10:40,072 --> 00:10:41,741
We are at 14,000 feet.
176
00:10:41,807 --> 00:10:43,142
We're about 14,000.
177
00:10:43,209 --> 00:10:45,478
And going down.
The plane is uncontrollable.
178
00:10:45,544 --> 00:10:47,947
Keep your
heads down. Stay down.
179
00:10:48,014 --> 00:10:49,415
Keep your heads down.
180
00:10:49,482 --> 00:10:50,850
Confirm people on board,
181
00:10:50,916 --> 00:10:54,086
intention and distance
from NAVAID if it's possible.
182
00:10:54,153 --> 00:10:55,554
152 people on board.
183
00:10:55,621 --> 00:10:57,490
The plane is uncontrollable.
184
00:10:57,556 --> 00:11:01,193
In just 30 seconds
the plane falls 9,000 feet.
185
00:11:03,696 --> 00:11:06,766
I understand
152 people on board.
186
00:11:06,832 --> 00:11:08,467
Affirmative.
187
00:11:08,534 --> 00:11:09,802
Acknowledge.
188
00:11:09,869 --> 00:11:11,904
Confirm at what level you
are crossing at this time
189
00:11:11,971 --> 00:11:14,140
Whisky-Charlie.-Whisky.
190
00:11:20,679 --> 00:11:24,116
Whisky-Charlie.-whisky 708,
191
00:11:24,183 --> 00:11:27,286
confirm position if possible.
192
00:11:27,353 --> 00:11:32,358
Whisky-Charlie.-whisky 708,
confirm position if possible.
193
00:11:35,628 --> 00:11:38,431
While flying over
six miles above the earth,
194
00:11:38,497 --> 00:11:43,836
West Caribbean 708 mysteriously
drops from the sky.
195
00:11:43,903 --> 00:11:47,740
Air traffic control in Venezuela
doesn't know its location
196
00:11:47,807 --> 00:11:50,276
or if anyone has survived.
197
00:12:03,656 --> 00:12:06,392
The morning after
West Caribbean flight 708
198
00:12:06,459 --> 00:12:08,928
goes missing,
Venezuelan villagers report
199
00:12:08,994 --> 00:12:14,100
that a plane has crashed
on a remote farm.
200
00:12:14,166 --> 00:12:17,103
Colonel Lorllys Ramos is
the lead air crash investigator
201
00:12:17,169 --> 00:12:19,271
for the Venezuelan government.
202
00:12:19,338 --> 00:12:21,941
She has never handled
a crash this big.
203
00:12:26,912 --> 00:12:29,415
She's shocked by what she sees.
204
00:12:29,482 --> 00:12:31,917
All 160 people on board,
205
00:12:31,984 --> 00:12:35,955
most of them french citizens
from Martinique, have died.
206
00:12:43,162 --> 00:12:45,297
It was a real shock for us
207
00:12:45,364 --> 00:12:48,234
because it was our first
really big accident.
208
00:12:48,300 --> 00:12:49,802
And it had the highest number
of deaths
209
00:12:49,869 --> 00:12:52,738
for any crash in Venezuela.
210
00:12:52,805 --> 00:12:55,141
We felt a lot of pressure
because of that.
211
00:12:58,410 --> 00:13:01,580
The scope of
the investigation is daunting.
212
00:13:04,783 --> 00:13:07,620
Lorllys Ramos knows that
the plane that has crashed
213
00:13:07,686 --> 00:13:10,156
is one of the safest planes
in the world.
214
00:13:10,222 --> 00:13:14,026
There are more than 3,000
such planes flying every day.
215
00:13:16,929 --> 00:13:18,397
Investigating a crash
216
00:13:18,464 --> 00:13:21,600
where an aircraft so popular
as the MD-80
217
00:13:21,667 --> 00:13:23,169
is a great responsibility
218
00:13:23,235 --> 00:13:27,139
because of the effects it could
have on the rest of the fleet.
219
00:13:30,809 --> 00:13:32,411
The Colombian, Venezuelan
220
00:13:32,478 --> 00:13:34,113
and french press from Martinique
221
00:13:34,180 --> 00:13:37,283
all descend on the site
demanding answers.
222
00:13:41,687 --> 00:13:44,056
The plane has crashed
in a lawless area
223
00:13:44,123 --> 00:13:46,225
next to the Colombian border.
224
00:13:46,292 --> 00:13:48,661
Kidnappings are common.
225
00:13:51,330 --> 00:13:53,599
The Venezuelan army
informs investigators
226
00:13:53,666 --> 00:13:57,870
that it can only protect them
during daylight hours.
227
00:13:57,937 --> 00:13:59,071
We don't have
a lot of time.
228
00:13:59,138 --> 00:14:00,906
Let's get everything
documented...
229
00:14:04,043 --> 00:14:05,144
Certainly our team,
230
00:14:05,211 --> 00:14:06,412
including myself,
231
00:14:06,478 --> 00:14:08,981
wasn't prepared
for the emergency we faced.
232
00:14:16,322 --> 00:14:17,957
This accident was complex.
233
00:14:18,023 --> 00:14:19,191
And it was very difficult
234
00:14:19,258 --> 00:14:22,127
to quickly figure out
what had happened.
235
00:14:25,431 --> 00:14:27,466
After the victims
have been removed,
236
00:14:27,533 --> 00:14:30,069
the investigators' first goal
is to determine
237
00:14:30,135 --> 00:14:34,540
how much of the plane landed
intact at the crash site.
238
00:14:34,607 --> 00:14:38,177
If it's all there, they can
rule out a mid-air break-up.
239
00:14:44,717 --> 00:14:46,385
We could
observe the four corners
240
00:14:46,452 --> 00:14:47,953
of the aircraft:
241
00:14:48,020 --> 00:14:52,458
The tail, a part of the cockpit
and some remains of the wings.
242
00:14:52,524 --> 00:14:54,827
And this suggested
that there were no explosions
243
00:14:54,893 --> 00:14:57,896
or a collision that produced
the accident.
244
00:15:04,770 --> 00:15:06,071
Investigators question
245
00:15:06,138 --> 00:15:08,374
the Maiquetia
air traffic controller.
246
00:15:08,440 --> 00:15:09,375
They told me
that they had a flameout
247
00:15:09,441 --> 00:15:11,010
on both their engines.
248
00:15:11,076 --> 00:15:12,778
Do you have
a problem on board?
249
00:15:12,845 --> 00:15:15,347
Tell him we've had
a flameout on both engines.
250
00:15:21,654 --> 00:15:23,589
When we learned that the crew
251
00:15:23,656 --> 00:15:25,524
had reported a flameout
in both engines,
252
00:15:25,591 --> 00:15:27,059
we immediately focused
on the function
253
00:15:27,126 --> 00:15:29,728
of the airplane's engines.
254
00:15:33,899 --> 00:15:36,935
Yeah, I'm just
getting up to speed now.
255
00:15:37,002 --> 00:15:38,937
Joe Sedor
is a senior investigator
256
00:15:39,004 --> 00:15:41,140
at the NTSB in Washington
257
00:15:41,206 --> 00:15:44,043
specializing
in foreign assignments.
258
00:15:44,109 --> 00:15:45,744
And as soon as we're
notified of an accident,
259
00:15:45,811 --> 00:15:47,479
we contact the manufacturer
260
00:15:47,546 --> 00:15:50,149
of both the airframe
and the engine.
261
00:15:50,215 --> 00:15:53,152
Given the initial information
of a dual engine flameout,
262
00:15:53,218 --> 00:15:54,887
this caused us to start getting
263
00:15:54,953 --> 00:15:58,390
as much information
about the engines as possible.
264
00:16:00,926 --> 00:16:04,129
No sign of fire
inside the engine.
265
00:16:04,196 --> 00:16:06,832
Lorllys had her hands
full with this accident.
266
00:16:06,899 --> 00:16:08,434
It was a remote location.
267
00:16:08,500 --> 00:16:10,836
There was four countries
involved,
268
00:16:10,903 --> 00:16:13,339
and she didn't have a big staff.
269
00:16:15,140 --> 00:16:16,475
Let's see
what we can find out
270
00:16:16,542 --> 00:16:19,545
about the weather
they flew through.
271
00:16:19,611 --> 00:16:21,980
Colonel Ramos knows
that severe storms
272
00:16:22,047 --> 00:16:25,784
can kill a plane's jet engines.
273
00:16:25,851 --> 00:16:29,922
In 1977 a DC-9 with
similarly mounted rear engines
274
00:16:29,988 --> 00:16:35,027
experienced a flameout while
flying through a thunderstorm.
275
00:16:35,094 --> 00:16:37,363
Both engines were disabled.
276
00:16:37,429 --> 00:16:39,732
The plane fell 17,000 feet,
277
00:16:39,798 --> 00:16:43,035
slammed to the ground
and erupted in flames.
278
00:16:48,707 --> 00:16:51,910
Investigators suspect
that the engines of flight 708
279
00:16:51,977 --> 00:16:53,045
may have flamed out
280
00:16:53,112 --> 00:16:56,048
either from heavy rain
entering them
281
00:16:56,115 --> 00:16:58,917
or due to turbulent winds.
282
00:16:58,984 --> 00:17:00,886
One way to think
of an engine flameout
283
00:17:00,953 --> 00:17:04,857
is when you have a pilot light
go out on your furnace at home.
284
00:17:04,923 --> 00:17:07,126
The engine is working properly
285
00:17:07,192 --> 00:17:09,128
with combustion
going on internally,
286
00:17:09,194 --> 00:17:12,564
and then the flame stops
287
00:17:12,631 --> 00:17:14,500
and the engine quits.
288
00:17:16,735 --> 00:17:18,804
If both engines flamed out,
289
00:17:18,871 --> 00:17:23,008
it would explain why the plane
fell from the sky in one piece.
290
00:17:29,481 --> 00:17:30,749
But colonel Ramos knows
291
00:17:30,816 --> 00:17:32,418
that her best chance
of finding out
292
00:17:32,484 --> 00:17:34,386
exactly what happened
to the engines
293
00:17:34,453 --> 00:17:37,489
lies with the plane's
two black boxes.
294
00:17:37,556 --> 00:17:41,760
They could hold critical
flight and voice data.
295
00:17:41,827 --> 00:17:43,829
But retrieving that data
gets complicated
296
00:17:43,896 --> 00:17:47,332
by political concerns.
297
00:17:47,399 --> 00:17:49,701
The other difficulty
with this investigation
298
00:17:49,768 --> 00:17:51,670
was the international aspect.
299
00:17:51,737 --> 00:17:55,841
This was a Colombia operator
that took off from Panama,
300
00:17:55,908 --> 00:17:59,011
was overflying Venezuela
301
00:17:59,077 --> 00:18:01,180
and crashed on their soil.
302
00:18:01,246 --> 00:18:03,782
So from the Venezuelan
standpoint
303
00:18:03,849 --> 00:18:06,452
they had very little connection
with the actual flight
304
00:18:06,518 --> 00:18:09,888
or the passengers
on the aircraft.
305
00:18:09,955 --> 00:18:11,423
The Venezuelan government,
306
00:18:11,490 --> 00:18:13,826
deeply mistrustful
of the United States,
307
00:18:13,892 --> 00:18:17,996
has the final say on who
will examine the black boxes.
308
00:18:18,063 --> 00:18:21,366
Since this is a United
States manufactured aircraft,
309
00:18:21,433 --> 00:18:23,302
we offered our facility to them
310
00:18:23,368 --> 00:18:26,371
to download
both the FDR and CVR.
311
00:18:26,438 --> 00:18:28,607
But they requested
that they be downloaded
312
00:18:28,674 --> 00:18:31,210
at the french facility
of the BEA,
313
00:18:31,276 --> 00:18:34,179
our counterparts in Paris.
314
00:18:36,114 --> 00:18:37,749
The black boxes are
sent to France
315
00:18:37,816 --> 00:18:39,351
for expert analysis.
316
00:18:40,819 --> 00:18:42,054
The French Aviation authorities
317
00:18:42,120 --> 00:18:44,456
participated in
the accident investigation
318
00:18:44,523 --> 00:18:49,228
because all the passengers
were french citizens
319
00:18:49,294 --> 00:18:51,363
that lived in Martinique.
320
00:19:00,873 --> 00:19:02,908
In the meantime,
investigators pursue
321
00:19:02,975 --> 00:19:05,944
another possible cause
of engine failure:
322
00:19:06,011 --> 00:19:08,780
Contaminated fuel.
323
00:19:08,847 --> 00:19:12,551
They track down the fuel truck
that filled the plane in Panama.
324
00:19:16,054 --> 00:19:18,056
It was
important to test the fuel
325
00:19:18,123 --> 00:19:21,493
because it was a possible cause
for why the engines had failed.
326
00:19:29,334 --> 00:19:31,370
We asked
the Panamanian authorities
327
00:19:31,436 --> 00:19:33,505
to test the fuel
for contaminants,
328
00:19:33,572 --> 00:19:36,508
but the results they obtained
were negative.
329
00:19:38,844 --> 00:19:41,847
Hi. I hope I can be
of some help.
330
00:19:41,914 --> 00:19:43,916
Joe Sedor arrives
from Washington
331
00:19:43,982 --> 00:19:46,718
with two engine experts.
332
00:19:46,785 --> 00:19:49,488
Once we arrived on scene,
that was one of the first things
333
00:19:49,555 --> 00:19:52,524
that we wanted to look at
was the engines.
334
00:19:52,591 --> 00:19:54,526
So my engine investigator
335
00:19:54,593 --> 00:19:57,229
and the Pratt and Whitney
investigator
336
00:19:57,296 --> 00:20:01,633
went to each engine
and examined them thoroughly.
337
00:20:01,700 --> 00:20:04,403
What they find
is surprising.
338
00:20:04,469 --> 00:20:06,738
Both engines
exhibited indications
339
00:20:06,805 --> 00:20:09,775
of high-speed rotation
at impact.
340
00:20:09,841 --> 00:20:12,444
That is to say that
the evidence indicated
341
00:20:12,511 --> 00:20:16,048
that both engines were operating
at a very high power.
342
00:20:16,114 --> 00:20:17,482
The investigators give
343
00:20:17,549 --> 00:20:19,384
the engines a clean bill
of health.
344
00:20:24,356 --> 00:20:26,158
When we
obtained the analysts' results
345
00:20:26,224 --> 00:20:29,294
for the engines, we realized
that they worked perfectly.
346
00:20:31,663 --> 00:20:33,131
You have
a problem on board?
347
00:20:33,198 --> 00:20:34,600
Affirmative.
348
00:20:34,666 --> 00:20:36,702
Tell him we've had
a flameout on both engines.
349
00:20:36,768 --> 00:20:39,137
We've had a flameout
on both engines.
350
00:20:39,204 --> 00:20:40,439
It sure looks like
those blades were turning
351
00:20:40,505 --> 00:20:43,108
when the plane hit the ground.
352
00:20:43,175 --> 00:20:45,310
And that the
flameout reported by the crew
353
00:20:45,377 --> 00:20:47,245
never happened.
354
00:20:49,047 --> 00:20:50,582
The main suspect
in the crash
355
00:20:50,649 --> 00:20:55,220
of one of the most popular
planes on earth is ruled out.
356
00:20:55,287 --> 00:20:57,623
Investigators need another lead.
357
00:20:57,689 --> 00:21:01,159
It made us want to get
that FDR and CVR data
358
00:21:01,226 --> 00:21:03,695
as quickly as possible.
359
00:21:03,762 --> 00:21:05,430
The team is now counting on
360
00:21:05,497 --> 00:21:06,698
the plane's two
black boxes
361
00:21:06,765 --> 00:21:09,267
to shed light on the cause
of the crash.
362
00:21:11,303 --> 00:21:15,807
They travel to France, where one
of the boxes has been opened.
363
00:21:15,874 --> 00:21:18,543
When they listen to the plane's
cockpit voice recorder,
364
00:21:18,610 --> 00:21:21,346
investigators are surprised
by what they hear.
365
00:21:21,413 --> 00:21:24,016
It's a stall, captain!
It's a stall!
366
00:21:25,984 --> 00:21:27,452
After listening to the
367
00:21:27,519 --> 00:21:28,754
cockpit voice recordings,
368
00:21:28,820 --> 00:21:31,823
we realized that the plane
had entered a stall.
369
00:21:34,993 --> 00:21:36,962
How did this plane stall
at over 30,000 feet
370
00:21:37,029 --> 00:21:40,399
with two working engines?
371
00:21:40,465 --> 00:21:42,768
To create the lift
needed to fly,
372
00:21:42,834 --> 00:21:45,437
a plane depends on
a very fast-moving stream of air
373
00:21:45,504 --> 00:21:46,905
over the wings.
374
00:21:46,972 --> 00:21:50,308
An airplane stall is
when the lift over the wings
375
00:21:50,375 --> 00:21:52,377
is reduced to the point
that the lift
376
00:21:52,444 --> 00:21:55,681
cannot support the weight
of the aircraft in the air.
377
00:22:04,723 --> 00:22:06,491
It's unusual
for planes to stall
378
00:22:06,558 --> 00:22:08,627
at such a high altitude.
379
00:22:08,694 --> 00:22:11,263
Investigators hope the plane's
second black box
380
00:22:11,329 --> 00:22:13,598
will reveal why that happened.
381
00:22:19,404 --> 00:22:21,540
When we
opened the flight data recorder,
382
00:22:21,606 --> 00:22:23,041
even though it was
really damaged,
383
00:22:23,108 --> 00:22:26,778
the conditions inside were good,
and that was a huge relief.
384
00:22:31,416 --> 00:22:32,784
But for some reason,
385
00:22:32,851 --> 00:22:36,988
much of what's on the recorder
sounds like gibberish.
386
00:22:37,055 --> 00:22:41,059
Unfortunately some
of the data was not usable.
387
00:22:44,596 --> 00:22:47,165
And it was some very important
data points
388
00:22:47,232 --> 00:22:48,633
that were not available,
389
00:22:48,700 --> 00:22:53,672
such as elevator position,
rudder position, heading,
390
00:22:53,739 --> 00:22:56,007
and the most important
parameters,
391
00:22:56,074 --> 00:22:58,243
engine pressure ratios.
392
00:22:59,611 --> 00:23:04,649
It's a disappointing
loss for Sedor.
393
00:23:04,716 --> 00:23:06,451
We need
those engine parameters.
394
00:23:06,518 --> 00:23:08,954
The engine pressure
numbers would tell investigators
395
00:23:09,020 --> 00:23:12,324
how much power the engines
were generating.
396
00:23:12,390 --> 00:23:14,760
They would paint a picture
of how the airplane was flying
397
00:23:14,826 --> 00:23:16,595
in its final minutes.
398
00:23:19,364 --> 00:23:23,001
In Washington
the NTSB offers to help.
399
00:23:26,138 --> 00:23:28,640
Sophisticated software
may be able to recapture
400
00:23:28,707 --> 00:23:31,476
some of the lost data.
401
00:23:31,543 --> 00:23:34,279
We wanted to work
with what data we had
402
00:23:34,346 --> 00:23:37,983
to recover any engine data
that we could.
403
00:23:38,049 --> 00:23:39,851
Meanwhile, investigators
404
00:23:39,918 --> 00:23:43,555
look for other clues about what
may have caused the stall.
405
00:23:43,622 --> 00:23:47,292
That's quite a storm,
probably very heavy rain.
406
00:23:47,359 --> 00:23:48,860
They discover that
the plane flew
407
00:23:48,927 --> 00:23:53,965
through freezing, wet weather
capable of causing ice to form.
408
00:23:54,032 --> 00:23:58,136
Ice on the wings
can cause a plane to stall.
409
00:23:58,203 --> 00:24:00,071
When ice accumulates
on an airplane,
410
00:24:00,138 --> 00:24:02,007
it will have increased drag
411
00:24:02,073 --> 00:24:05,143
and increased weight
and decreased lift.
412
00:24:05,210 --> 00:24:09,681
The MD-80 is equipped
with an anti-icing system.
413
00:24:09,748 --> 00:24:14,019
When turned on it blows hot air
from the engines onto the wings,
414
00:24:14,085 --> 00:24:16,354
preventing ice from forming.
415
00:24:20,692 --> 00:24:23,995
Let's see what they did
about the ice.
416
00:24:25,297 --> 00:24:28,500
Put on
the fasten seatbelt sign.
417
00:24:28,567 --> 00:24:31,069
Man, that is
a lot of nasty weather.
418
00:24:31,136 --> 00:24:33,805
As the plane rose
to 33,000 feet,
419
00:24:33,872 --> 00:24:37,909
Captain Ospina made
an unusual decision.
420
00:24:37,976 --> 00:24:40,145
Turn off
engine anti-icing.
421
00:24:43,782 --> 00:24:46,051
A short while later
First Officer Muñoz
422
00:24:46,117 --> 00:24:50,856
wants to know if the anti-icing
system should be turned back on.
423
00:24:50,922 --> 00:24:52,591
Should I
turn it on, captain?
424
00:24:52,657 --> 00:24:54,092
Do we have ice?
425
00:24:58,129 --> 00:24:59,464
Pilots generally
426
00:24:59,531 --> 00:25:01,633
examine the outside
metal windowsill
427
00:25:01,700 --> 00:25:04,236
to see whether ice
is forming there.
428
00:25:06,671 --> 00:25:08,273
Put 'em on.
429
00:25:08,340 --> 00:25:12,077
It appears
the captain saw ice.
430
00:25:12,143 --> 00:25:15,113
Since they were flying
through cold and wet conditions,
431
00:25:15,180 --> 00:25:16,948
investigators don't know
why the crew
432
00:25:17,015 --> 00:25:19,651
didn't simply turn on
the anti-icing system
433
00:25:19,718 --> 00:25:23,154
and leave it on.
434
00:25:23,221 --> 00:25:25,090
With the
weather conditions they had,
435
00:25:25,156 --> 00:25:26,892
they should have been using
the anti-ice systems
436
00:25:26,958 --> 00:25:29,194
during the entire flight.
437
00:25:31,429 --> 00:25:34,232
Investigators wonder
if the crew made an error
438
00:25:34,299 --> 00:25:37,002
that allowed ice to build up
on the plane's wings,
439
00:25:37,068 --> 00:25:40,405
causing it to stall
and fall from the sky.
440
00:25:47,879 --> 00:25:49,080
Promising new evidence
441
00:25:49,147 --> 00:25:51,850
in the crash of
West Caribbean flight 708
442
00:25:51,917 --> 00:25:53,518
may help the investigative team
443
00:25:53,585 --> 00:25:56,955
to zero in on the cause
of the disaster.
444
00:26:01,226 --> 00:26:04,062
The NTSB has managed to recover
missing data
445
00:26:04,129 --> 00:26:06,564
about the MD-80's engines.
446
00:26:12,837 --> 00:26:14,205
This was
very important for us
447
00:26:14,272 --> 00:26:16,474
because it allowed us
to understand the operation
448
00:26:16,541 --> 00:26:19,177
of the engine
throughout the flight.
449
00:26:19,244 --> 00:26:21,046
If there had been
ice on the wings,
450
00:26:21,112 --> 00:26:22,781
the engines would have had
to work harder
451
00:26:22,847 --> 00:26:25,917
to overcome the friction
it creates.
452
00:26:25,984 --> 00:26:28,853
The engine power numbers
would have gone up.
453
00:26:28,920 --> 00:26:30,689
Look at this.
454
00:26:30,755 --> 00:26:35,293
Engine power wasn't going up,
it was actually going down.
455
00:26:35,360 --> 00:26:36,461
Therefore that showed
456
00:26:36,528 --> 00:26:40,465
that there was no ice
on the airframe.
457
00:26:40,532 --> 00:26:44,703
Ice didn't
cause the stall.
458
00:26:44,769 --> 00:26:48,173
So what did?
459
00:26:48,239 --> 00:26:50,675
Investigators must determine
why the engines
460
00:26:50,742 --> 00:26:52,744
weren't providing
the power needed
461
00:26:52,811 --> 00:26:54,813
to keep the MD-80 in the air.
462
00:26:59,551 --> 00:27:02,520
The airline's troubled history
of safety violations
463
00:27:02,587 --> 00:27:05,991
gives investigators
a possible lead.
464
00:27:06,057 --> 00:27:09,995
It had been cited
for flying overweight planes.
465
00:27:10,061 --> 00:27:12,530
Colombian authorities
used to bring the aircraft
466
00:27:12,597 --> 00:27:15,633
to a scale they have
at Bogota Airport
467
00:27:15,700 --> 00:27:17,502
and compare against
the manifest.
468
00:27:17,569 --> 00:27:21,373
And on some occasions they found
that the aircraft was heavier
469
00:27:21,439 --> 00:27:24,943
than what was reported.
470
00:27:25,010 --> 00:27:27,545
Did flight 708
stall in mid-air
471
00:27:27,612 --> 00:27:29,247
because it was too heavy?
472
00:27:32,350 --> 00:27:33,885
During our visit to Panama,
473
00:27:33,952 --> 00:27:35,787
we observed that West Caribbean
474
00:27:35,854 --> 00:27:37,655
didn't have
very rigorous control
475
00:27:37,722 --> 00:27:41,393
over the checking of passengers'
luggage and their weight.
476
00:27:43,762 --> 00:27:45,263
If a plane is too heavy,
477
00:27:45,330 --> 00:27:47,966
it may not be able to fly
at higher altitudes
478
00:27:48,033 --> 00:27:50,135
where the air is less dense.
479
00:27:54,839 --> 00:27:58,076
Pilots need to make
these calculations carefully.
480
00:28:05,183 --> 00:28:06,885
The pilot
knows at what altitude
481
00:28:06,951 --> 00:28:10,188
he can fly by studying the
aircraft's performance tables
482
00:28:10,255 --> 00:28:13,258
and inputting the plane's weight
and the temperature.
483
00:28:15,226 --> 00:28:16,895
What investigators don't know
484
00:28:16,961 --> 00:28:19,964
is whether Captain Ospina
did the math correctly.
485
00:28:20,031 --> 00:28:23,268
Stand by.
486
00:28:23,334 --> 00:28:26,037
They now try
to calculate whether flight 708
487
00:28:26,104 --> 00:28:30,608
was too heavy to avoid stalling
at 33,000 feet.
488
00:28:30,675 --> 00:28:31,876
So we went back and looked
489
00:28:31,943 --> 00:28:34,979
at the number
of passengers on board,
490
00:28:35,046 --> 00:28:36,614
the number of crew on board
491
00:28:36,681 --> 00:28:41,786
and the weight of the aircraft
itself along with the baggage.
492
00:28:41,853 --> 00:28:43,388
They already tested the plane
493
00:28:43,455 --> 00:28:47,225
at its reported weight
of 148,000 pounds.
494
00:28:47,292 --> 00:28:49,894
Alright, let's add
a few thousand pounds:
495
00:28:49,961 --> 00:28:54,232
Heavier luggage,
mis-weighed cargo.
496
00:28:56,568 --> 00:28:59,504
Uh, let's try
155,000 pounds.
497
00:29:00,839 --> 00:29:02,941
Investigators now
make the calculations
498
00:29:03,007 --> 00:29:05,677
for a plane that's
grossly overweight.
499
00:29:07,812 --> 00:29:09,881
They're in for a surprise.
500
00:29:09,948 --> 00:29:13,518
And even with a heavier
aircraft at takeoff,
501
00:29:13,585 --> 00:29:18,189
the aircraft could maintain
level flight at 3-3-0.
502
00:29:18,256 --> 00:29:21,459
It's a setback
for the investigation.
503
00:29:21,526 --> 00:29:24,596
We're missing something.
504
00:29:24,662 --> 00:29:27,265
Let's go back
to the beginning.
505
00:29:30,835 --> 00:29:32,170
After much research,
506
00:29:32,237 --> 00:29:34,372
investigators still
can't figure out
507
00:29:34,439 --> 00:29:37,008
what caused the plane to stall.
508
00:29:43,114 --> 00:29:45,617
Thanks.
509
00:29:45,683 --> 00:29:47,085
The answer
has to do with
510
00:29:47,152 --> 00:29:49,354
how a plane distributes power.
511
00:29:54,893 --> 00:29:56,227
When it's turned on,
512
00:29:56,294 --> 00:29:59,364
the anti-icing system
draws energy from the engines,
513
00:29:59,430 --> 00:30:01,699
reducing power for thrust.
514
00:30:01,766 --> 00:30:02,934
This decrease in thrust
515
00:30:03,001 --> 00:30:04,402
can affect the performance
of the airplane
516
00:30:04,469 --> 00:30:06,804
depending on the weight
and the altitude.
517
00:30:06,871 --> 00:30:08,306
So the performance study showed
518
00:30:08,373 --> 00:30:10,808
that the airplane was perfectly
safe to fly at 33,000 feet
519
00:30:10,875 --> 00:30:12,410
with the anti-ice off.
520
00:30:12,477 --> 00:30:14,846
Anti-ice on, please.
521
00:30:14,913 --> 00:30:18,316
However, it could only
fly as high as 31,900 feet
522
00:30:18,383 --> 00:30:21,519
with the anti-ice on.
523
00:30:21,586 --> 00:30:24,022
It was the anti-icing.
524
00:30:24,088 --> 00:30:26,324
It robbed them
of the power they needed.
525
00:30:29,160 --> 00:30:32,463
They shouldn't have gone
higher than 31-9.
526
00:30:42,407 --> 00:30:43,942
We concluded
that the aircraft
527
00:30:44,008 --> 00:30:45,610
was flown too high
for its weight
528
00:30:45,677 --> 00:30:48,246
and the weather conditions
it faced.
529
00:30:53,117 --> 00:30:54,285
Put 'em on.
530
00:30:54,352 --> 00:30:55,687
The airspeed started
to decelerate
531
00:30:55,753 --> 00:30:58,590
when the flight crew turned on
the anti-ice system.
532
00:30:58,656 --> 00:31:01,659
This reduced the thrust
of the engine.
533
00:31:01,726 --> 00:31:04,596
Investigators
conclude the reduction in thrust
534
00:31:04,662 --> 00:31:06,731
led the plane to stall.
535
00:31:06,798 --> 00:31:09,801
Sir, we just got
the final load sheet.
536
00:31:09,867 --> 00:31:12,036
They now assume that
when Captain Ospina
537
00:31:12,103 --> 00:31:14,772
calculated his
maximum cruise altitude,
538
00:31:14,839 --> 00:31:18,977
he failed to factor in
the need for anti-icing.
539
00:31:19,043 --> 00:31:20,245
There are many factors
540
00:31:20,311 --> 00:31:22,180
you have to take into account
when planning,
541
00:31:22,247 --> 00:31:25,083
and apparently, they did not
do it in this case.
542
00:31:25,149 --> 00:31:27,652
But if low thrust
led to a stall,
543
00:31:27,719 --> 00:31:30,588
why didn't the crew notice?
544
00:31:30,655 --> 00:31:33,558
Part of the answer is that while
the problem was developing,
545
00:31:33,625 --> 00:31:37,762
they weren't flying the plane.
546
00:31:37,829 --> 00:31:39,897
They had their autopilot on.
547
00:31:43,167 --> 00:31:46,871
The autopilot
should not let a plane stall.
548
00:31:46,938 --> 00:31:49,607
Investigators wonder why
this particular autopilot
549
00:31:49,674 --> 00:31:51,309
let that happen.
550
00:31:59,784 --> 00:32:02,754
While researching
the autopilot on the MD-80,
551
00:32:02,820 --> 00:32:04,522
investigators discover
a bulletin
552
00:32:04,589 --> 00:32:07,592
from the plane's manufacturer.
553
00:32:07,659 --> 00:32:12,230
It was sent to the airline
three years earlier.
554
00:32:12,297 --> 00:32:13,464
"Under some conditions
555
00:32:13,531 --> 00:32:15,800
airspeed could decay
to stall warning
556
00:32:15,867 --> 00:32:17,969
before the autopilot
disconnects."
557
00:32:21,673 --> 00:32:23,207
In the bulletin issued by Boeing
558
00:32:23,274 --> 00:32:25,677
it described another incident
with an autopilot
559
00:32:25,743 --> 00:32:27,145
that was almost the exact same
560
00:32:27,211 --> 00:32:29,947
as what had happened
with West Caribbean .
561
00:32:31,482 --> 00:32:32,917
The bulletin warned crews
562
00:32:32,984 --> 00:32:34,519
that if they set the autopilot
563
00:32:34,585 --> 00:32:36,754
to maintain
the plane's altitude,
564
00:32:36,821 --> 00:32:39,724
they should keep a close eye
on their airspeed.
565
00:32:39,791 --> 00:32:41,092
The operation bulletin warned
566
00:32:41,159 --> 00:32:45,163
that with the autopilot on
and at altitude
567
00:32:45,229 --> 00:32:47,932
that a similar situation
could occur
568
00:32:47,999 --> 00:32:50,468
where the aircraft
could maintain altitude
569
00:32:50,535 --> 00:32:53,104
and airspeed could decrease
570
00:32:53,171 --> 00:32:56,741
if the pilots were not
monitoring the airspeed.
571
00:32:56,808 --> 00:32:59,110
So in order to maintain altitude
572
00:32:59,177 --> 00:33:01,479
as the speed goes down
573
00:33:01,546 --> 00:33:05,116
the aircraft starts to pitch up,
nose up attitude,
574
00:33:05,183 --> 00:33:07,251
increasing the angle of attack
575
00:33:07,318 --> 00:33:10,455
to have a better lift.
576
00:33:10,521 --> 00:33:14,926
But that has a problem because
you cannot exceed certain angle
577
00:33:14,992 --> 00:33:18,629
because you can enter
a stall condition.
578
00:33:20,798 --> 00:33:22,700
In this case
the autopilot led the aircraft
579
00:33:22,767 --> 00:33:26,003
into a condition that caused
an excessive angle of attack.
580
00:33:26,070 --> 00:33:28,940
That generated the stall.
581
00:33:30,508 --> 00:33:32,610
As important
as the bulletin was,
582
00:33:32,677 --> 00:33:37,115
there's no evidence that it ever
reached West Caribbean pilots.
583
00:33:39,150 --> 00:33:41,552
Investigators now have
a deeper understanding
584
00:33:41,619 --> 00:33:44,389
of the events causing the stall.
585
00:33:44,455 --> 00:33:46,891
The crew wasn't monitoring
their instruments,
586
00:33:46,958 --> 00:33:48,192
believing that the autopilot
587
00:33:48,259 --> 00:33:50,561
would maintain
the correct speed.
588
00:33:50,628 --> 00:33:53,564
They were wrong.
589
00:33:53,631 --> 00:33:56,000
It was at this moment
that the captain began to notice
590
00:33:56,067 --> 00:33:57,802
that something wasn't right.
591
00:33:57,869 --> 00:33:59,337
I can't accelerate.
592
00:33:59,404 --> 00:34:00,772
I'm going
to the bathroom.
593
00:34:00,838 --> 00:34:03,341
They were aware
that they had a problem,
594
00:34:03,408 --> 00:34:05,443
but they didn't know why.
595
00:34:09,647 --> 00:34:11,783
The captain decided
to descend to an altitude
596
00:34:11,849 --> 00:34:15,186
where the engines
would perform better.
597
00:34:15,253 --> 00:34:18,322
And descending to 31,000 feet
was the right choice.
598
00:34:18,389 --> 00:34:20,291
That's why he disconnected
the autopilot
599
00:34:20,358 --> 00:34:22,126
to begin the descent.
600
00:34:22,193 --> 00:34:23,961
Give me 3-1-0.
601
00:34:24,028 --> 00:34:26,397
The plane
is very close to stalling.
602
00:34:26,464 --> 00:34:28,032
But the crew is
just seconds away
603
00:34:28,099 --> 00:34:30,935
from overcoming the problem.
604
00:34:31,002 --> 00:34:35,773
If he would have attained
31,000 feet during that descent,
605
00:34:35,840 --> 00:34:37,775
the speed would have gone up
606
00:34:37,842 --> 00:34:41,012
and he would have
recovered the lift.
607
00:34:41,078 --> 00:34:42,914
And after leveling off
608
00:34:42,980 --> 00:34:46,851
there would have been
no problem at all.
609
00:34:46,918 --> 00:34:48,986
They almost made it.
610
00:34:49,053 --> 00:34:53,491
But the captain was oblivious
to his biggest threat.
611
00:34:53,558 --> 00:34:55,426
The plane is still
traveling slowly
612
00:34:55,493 --> 00:35:00,398
with its nose raised
at a dangerously high angle.
613
00:35:00,465 --> 00:35:03,334
That's when the crew
experienced some bad luck.
614
00:35:03,401 --> 00:35:06,003
The weather they were
flying through was turbulent.
615
00:35:06,070 --> 00:35:09,674
Winds were intense
and the plane was vulnerable.
616
00:35:09,740 --> 00:35:11,209
Our study showed
that it would only take
617
00:35:11,275 --> 00:35:15,313
a 20-mile-an-hour updraft to
push the aircraft into a stall.
618
00:35:17,215 --> 00:35:19,517
Investigators
conclude that the plane was hit
619
00:35:19,584 --> 00:35:23,821
with a ferocious updraft
that lifted the plane's nose
620
00:35:23,888 --> 00:35:27,391
just enough to put it
into a stall--
621
00:35:27,458 --> 00:35:30,228
a crisis the crew
then mishandled.
622
00:35:32,163 --> 00:35:33,297
There was very little
623
00:35:33,364 --> 00:35:34,565
communication between them.
624
00:35:34,632 --> 00:35:36,434
The captain thought he was
having a flameout
625
00:35:36,501 --> 00:35:38,369
in both engines.
626
00:35:39,971 --> 00:35:43,674
Tell him we've had
a flameout, both engines.
627
00:35:43,741 --> 00:35:44,842
We have...
628
00:35:44,909 --> 00:35:46,444
We have a flameout
on both our engines.
629
00:35:46,511 --> 00:35:49,013
The captain was not
telling the first officer
630
00:35:49,080 --> 00:35:50,915
what to do.
631
00:35:50,982 --> 00:35:53,651
The captain was only fixating,
632
00:35:53,718 --> 00:35:58,256
or, if you will, have
tunnel vision, on the engines,
633
00:35:58,322 --> 00:36:01,526
which is a very big problem
in this situation.
634
00:36:06,063 --> 00:36:08,699
As the investigation
into the crash of flight 708
635
00:36:08,766 --> 00:36:13,137
nears completion, only one
mystery remains unsolved.
636
00:36:13,204 --> 00:36:15,506
It's a stall.
637
00:36:15,573 --> 00:36:17,608
Muñoz seems to know
what was happening.
638
00:36:17,675 --> 00:36:20,111
Why did the crew
fail to recover from a stall
639
00:36:20,177 --> 00:36:22,380
that they'd been trained
to overcome?
640
00:36:22,446 --> 00:36:23,714
To get out of a stall
641
00:36:23,781 --> 00:36:27,151
a pilot should increase thrust
and pitch over,
642
00:36:27,218 --> 00:36:29,520
that is, push forward
on the control column.
643
00:36:29,587 --> 00:36:31,923
But as the recovered
flight data shows,
644
00:36:31,989 --> 00:36:34,559
that's not what
Captain Ospina did.
645
00:36:34,625 --> 00:36:35,960
There is no indication
646
00:36:36,027 --> 00:36:37,795
that the pilot pushed forward
on the control column
647
00:36:37,862 --> 00:36:41,699
to reduce the angle of attack
and to increase speed.
648
00:36:44,435 --> 00:36:47,772
He's pulling back
on the control column.
649
00:36:47,838 --> 00:36:49,407
At that point it was impossible
650
00:36:49,473 --> 00:36:50,875
to recover from the stall.
651
00:36:50,942 --> 00:36:54,178
The captain
should have pushed forward.
652
00:36:54,245 --> 00:36:58,149
The question remains:
Why didn't he?
653
00:37:00,618 --> 00:37:02,453
Investigators get
their first clue
654
00:37:02,520 --> 00:37:04,288
when they re-examine
the engine data
655
00:37:04,355 --> 00:37:07,058
at the precise moment
of the stall.
656
00:37:07,124 --> 00:37:10,494
That's what distracted
the captain.
657
00:37:10,561 --> 00:37:12,296
At the time that
the airplane stalled,
658
00:37:12,363 --> 00:37:17,168
we also saw that both engines
rolled back at the same time.
659
00:37:17,234 --> 00:37:20,738
This most likely
confused the pilots.
660
00:37:20,805 --> 00:37:23,407
When airflow
to the engines is disrupted,
661
00:37:23,474 --> 00:37:28,746
it causes a rollback,
reducing thrust.
662
00:37:28,813 --> 00:37:31,482
Because of the updrafts
in the area,
663
00:37:31,549 --> 00:37:33,150
it most likely increased
the angle of attack
664
00:37:33,217 --> 00:37:34,785
of the engine inlet,
665
00:37:34,852 --> 00:37:37,355
which then caused the engines
to roll back.
666
00:37:37,421 --> 00:37:39,924
With his engine power
temporarily reduced,
667
00:37:39,991 --> 00:37:43,594
the captain wrongly concluded
that his engines had quit.
668
00:37:43,661 --> 00:37:44,595
It's a stall!
669
00:37:44,662 --> 00:37:45,796
The first officer yelled:
670
00:37:45,863 --> 00:37:47,965
It's a stall, cappy,
it's a stall.
671
00:37:51,302 --> 00:37:54,438
There was no response
from the captain.
672
00:37:54,505 --> 00:37:55,573
This showed that the captain
673
00:37:55,640 --> 00:37:58,743
was fixating most likely
on the engines.
674
00:37:58,809 --> 00:38:01,012
Unaware he had stalled,
675
00:38:01,078 --> 00:38:02,680
the captain made things worse
676
00:38:02,747 --> 00:38:04,715
by pulling back
on his control column.
677
00:38:04,782 --> 00:38:09,320
That kept the nose of the plane
angled dangerously high.
678
00:38:09,387 --> 00:38:12,323
Tell him we've had
a flameout on both engines.
679
00:38:12,390 --> 00:38:15,126
We've had a flameout
on both engines.
680
00:38:15,192 --> 00:38:16,527
The crew couldn't understand
681
00:38:16,594 --> 00:38:19,263
the situation presented to them.
682
00:38:19,330 --> 00:38:22,400
West 708,
go down to level 2-4-0.
683
00:38:22,466 --> 00:38:24,001
Do you have a problem
on board?
684
00:38:24,068 --> 00:38:26,671
We've had a flameout
on both engines.
685
00:38:26,737 --> 00:38:29,507
They had a heavy buffet
from the stall.
686
00:38:29,573 --> 00:38:32,576
They were looking at the engines
which were rolled back,
687
00:38:32,643 --> 00:38:35,913
and they were also communicating
with the air traffic controller.
688
00:38:35,980 --> 00:38:39,417
During that time there was not
much troubleshooting going on
689
00:38:39,483 --> 00:38:40,818
in the cockpit.
690
00:38:40,885 --> 00:38:45,222
This was a very, very difficult
time for the pilot.
691
00:38:45,289 --> 00:38:46,624
It is very important
692
00:38:46,691 --> 00:38:51,796
that the crews communicate
in an effective way.
693
00:38:51,862 --> 00:38:54,265
And in this case you don't hear
694
00:38:54,331 --> 00:38:57,168
the two pilots communicating
between themselves.
695
00:39:02,106 --> 00:39:04,675
It was an almost silent cockpit
696
00:39:04,742 --> 00:39:07,778
until the time
just before the accident
697
00:39:07,845 --> 00:39:10,881
when they realized they were
in deep trouble.
698
00:39:16,387 --> 00:39:19,490
But by that time
it was already too late.
699
00:39:19,557 --> 00:39:24,395
They were past
the point of no return.
700
00:39:24,462 --> 00:39:25,796
During that descent,
701
00:39:25,863 --> 00:39:27,898
according to
the flight data recorder,
702
00:39:27,965 --> 00:39:29,934
they reached a rate of descent
703
00:39:30,000 --> 00:39:34,905
an average of more than
12,000 feet per minute.
704
00:39:34,972 --> 00:39:38,509
At that rate of descent,
not only the G-force
705
00:39:38,576 --> 00:39:41,579
will prevent them
from any coordinated action,
706
00:39:41,645 --> 00:39:47,151
the vibration in the aircraft
would be a lot.
707
00:39:47,218 --> 00:39:49,353
That's why when you hear
the voice recorder,
708
00:39:49,420 --> 00:39:51,355
you hear the voice trembling.
709
00:39:51,422 --> 00:39:52,923
Negative! Negative!
710
00:39:52,990 --> 00:39:55,526
- We are at 14,000 feet.
- We're about 14,000.
711
00:39:55,593 --> 00:39:57,661
We're going down.
The plane is uncontrollable.
712
00:39:57,728 --> 00:40:01,398
And that's because of
high vibration in the aircraft.
713
00:40:03,334 --> 00:40:05,503
For everyone on board,
714
00:40:05,569 --> 00:40:10,841
the final plunge was a nightmare
lasting almost three minutes.
715
00:40:20,284 --> 00:40:21,919
Whisky-Charlie.-whisky...
716
00:40:25,222 --> 00:40:27,158
When colonel
Lorllys Ramos and her team
717
00:40:27,224 --> 00:40:29,093
interview friends and family
of the pilots
718
00:40:29,160 --> 00:40:31,028
of West Caribbean flight 708...
719
00:40:31,095 --> 00:40:32,763
How was he
when he was at home?
720
00:40:32,830 --> 00:40:34,932
...they uncover
other longstanding issues
721
00:40:34,999 --> 00:40:37,802
that may help explain
the crew's behavior.
722
00:40:37,868 --> 00:40:39,403
West Caribbean Airline
723
00:40:39,470 --> 00:40:44,575
was going through a very
critical financial status.
724
00:40:50,281 --> 00:40:51,515
Because of West Caribbean's
725
00:40:51,582 --> 00:40:52,850
economic struggles,
726
00:40:52,917 --> 00:40:56,086
the crew members hadn't been
paid for six months.
727
00:40:58,956 --> 00:41:01,926
And this could have influenced
the captain's concentration.
728
00:41:08,966 --> 00:41:11,502
Investigators
discover that Captain Ospina
729
00:41:11,569 --> 00:41:14,839
was forced to take a second job
moonlighting in a bar
730
00:41:14,905 --> 00:41:17,374
in order to make ends meet
for his family.
731
00:41:20,778 --> 00:41:21,812
The level of stress
732
00:41:21,879 --> 00:41:23,080
that the captain was under
733
00:41:23,147 --> 00:41:25,983
because of his financial
situation was huge.
734
00:41:28,319 --> 00:41:30,087
Have we solved
the fuel situation yet?
735
00:41:30,154 --> 00:41:32,022
I think we're
getting close, captain.
736
00:41:32,089 --> 00:41:33,290
Before the accident
737
00:41:33,357 --> 00:41:35,593
the crew was delayed
in Colombia for hours
738
00:41:35,659 --> 00:41:38,629
because the airline
couldn't pay for their fuel.
739
00:41:38,696 --> 00:41:42,199
That was their third
of four flights that day.
740
00:41:44,335 --> 00:41:46,303
The crew
was under a lot of stress
741
00:41:46,370 --> 00:41:47,805
because they were already late
742
00:41:47,872 --> 00:41:51,008
and they didn't know if
their flight would be canceled.
743
00:41:55,446 --> 00:41:57,615
It's a stall, captain!
744
00:41:57,681 --> 00:41:59,783
It's a stall!
745
00:41:59,850 --> 00:42:01,552
Investigators also believe
746
00:42:01,619 --> 00:42:03,254
that the 21-year-old
first officer
747
00:42:03,320 --> 00:42:05,890
should have voiced his opinions
more clearly.
748
00:42:08,058 --> 00:42:10,127
There was
a considerable age difference
749
00:42:10,194 --> 00:42:12,363
between the captain
and the copilot,
750
00:42:12,429 --> 00:42:14,265
and this might have
intimidated the copilot
751
00:42:14,331 --> 00:42:18,402
when he needed to speak up.
752
00:42:18,469 --> 00:42:20,037
Do I turn it on, captain?
753
00:42:20,104 --> 00:42:23,040
Do we have ice?
754
00:42:23,107 --> 00:42:24,675
No matter how young
755
00:42:24,742 --> 00:42:28,112
the copilots
and the first officers are,
756
00:42:28,178 --> 00:42:32,783
how old and experienced
the captain is,
757
00:42:32,850 --> 00:42:36,520
they have the right
to preserve their life
758
00:42:36,587 --> 00:42:39,623
if they see something
that's going wrong.
759
00:42:39,690 --> 00:42:41,358
It's a stall, captain!
760
00:42:41,425 --> 00:42:42,860
It's a stall!
761
00:42:42,927 --> 00:42:46,697
And they alert the
captain and he does not react,
762
00:42:46,764 --> 00:42:49,566
they should react by themselves.
763
00:42:54,271 --> 00:42:56,807
The investigation's
official report concludes
764
00:42:56,874 --> 00:43:00,244
that there was an insufficient
level of situational awareness
765
00:43:00,311 --> 00:43:03,180
in both pilots.
766
00:43:03,247 --> 00:43:04,715
Although the pilot's actions
767
00:43:04,782 --> 00:43:06,383
are in question in this flight,
768
00:43:06,450 --> 00:43:09,153
we also have to look
at the operator.
769
00:43:09,219 --> 00:43:11,388
Did the operator provide
proper training?
770
00:43:11,455 --> 00:43:13,891
We found that the training
was insufficient,
771
00:43:13,958 --> 00:43:16,093
that they did not receive
proper CRM training,
772
00:43:16,160 --> 00:43:18,162
and they did not
receive proper stall training.
773
00:43:27,404 --> 00:43:28,706
This accident happened
774
00:43:28,772 --> 00:43:30,074
as a result of numerous factors
775
00:43:30,140 --> 00:43:34,078
that aren't only attributable
to the crew.
776
00:43:34,144 --> 00:43:38,582
There were deplorable conditions
in the operation of the airline.
777
00:43:38,649 --> 00:43:41,785
And over time, these faults
can lead to accidents.
778
00:43:49,460 --> 00:43:51,762
- Negative! Negative!
- We're at 14,000 feet.
779
00:43:51,829 --> 00:43:54,732
-We're going down.
-The plane is uncontrollable.
780
00:43:54,798 --> 00:43:57,201
The report makes
a long list of recommendations
781
00:43:57,267 --> 00:44:01,405
to ensure that the tragedy of
flight 708 never happens again.
782
00:44:08,345 --> 00:44:10,514
We made recommendations
783
00:44:10,581 --> 00:44:12,149
to the Colombian
Aviation authorities
784
00:44:12,216 --> 00:44:14,385
to improve pilot training.
785
00:44:14,451 --> 00:44:17,287
Specifically, better training
in crew communication
786
00:44:17,354 --> 00:44:18,722
and having a better awareness
787
00:44:18,789 --> 00:44:21,658
about the use
of the plane's autopilot.
788
00:44:28,065 --> 00:44:29,600
After this accident occurred,
789
00:44:29,666 --> 00:44:32,836
the airline was grounded
and it never operated again.
790
00:44:32,903 --> 00:44:38,042
It went bankrupt
and simply disappeared.
791
00:44:38,108 --> 00:44:39,843
But West Caribbean Airways
792
00:44:39,910 --> 00:44:43,714
did leave a valuable legacy--
793
00:44:43,781 --> 00:44:45,082
better safety measures
794
00:44:45,149 --> 00:44:46,550
for every other MD-80
795
00:44:46,617 --> 00:44:48,719
taking to the skies today.
60626
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