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😔 Cuban 737 Down at Havana

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Old 05-29-2018, 05:18 AM
  #11  
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No, I did not. That explains the zoom.

But I still don’t know why it appears to have winglets.
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Old 05-29-2018, 07:59 AM
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The winglets issue could be the curvature of the monitor the video is playing on. I think it distorted the wing tips just enough to make it look like it had winglets. I can make out enough of the engines to see they are the longer cowling from the -200.

Also, look at the time stamp. It jumps from 11:00 as the aircraft is falling to 16:06. That explains why there is no fireball in the video.
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Old 05-29-2018, 08:45 AM
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Originally Posted by rickair7777 View Post
That was a cargo plane, and the root cause was cargo.
And yet parts of it looked similar....

And the root cause wasn’t the cargo, it was a shift in the cargo.
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Old 05-29-2018, 09:07 AM
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Originally Posted by John Carr View Post
And yet parts of it looked similar....

And the root cause wasn’t the cargo, it was a shift in the cargo.

Yeah, that's what I was alluding to. But that wouldn't happen to a pax airplane unless all the people got up and ran to the back all at once. It would be really hard to load a 73 so it could take off but then not fly.
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Old 05-29-2018, 09:18 AM
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Originally Posted by rickair7777 View Post
Yeah, that's what I was alluding to. But that wouldn't happen to a pax airplane unless all the people got up and ran to the back all at once. It would be really hard to load a 73 so it could take off but then not fly.
Actually in the 74 incident it wasn't even the shifting of the cargo balance that brought it down, it was the fact that when the cargo shifted backwards it did so with enough force that it destroyed several hydraulic lines behind the aft pressure wall that controlled the elevator and thus the crew lost pitch control.
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Old 05-29-2018, 09:24 AM
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Originally Posted by SonicFlyer View Post
Actually in the 74 incident it wasn't even the shifting of the cargo balance that brought it down, it was the fact that when the cargo shifted backwards it did so with enough force that it destroyed several hydraulic lines behind the aft pressure wall that controlled the elevator and thus the crew lost pitch control.
And although slightly different things involved, could have been seen with a DC “back in the day” had there been cameras everywhere. I’m not talking about AA in ORD or UA SUX, completely different issue.

Last edited by John Carr; 05-29-2018 at 09:36 AM.
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Old 05-30-2018, 10:37 AM
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Originally Posted by SonicFlyer View Post
Actually in the 74 incident it wasn't even the shifting of the cargo balance that brought it down, it was the fact that when the cargo shifted backwards it did so with enough force that it destroyed several hydraulic lines behind the aft pressure wall that controlled the elevator and thus the crew lost pitch control.

It actually destroyed the jackscrew. The initial investigation assumed the weight shift caused the crash, but they determined in the sim that it would have been recoverable, even with the degraded hydraulics. The cargo (a military vehicle) rolled back, through the aft bulkhead and took out the horizontal stabilizer jackscrew, I think that allowed the h. stab to float freely, which is typically not controllable. Same was that AS MD crash.
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Old 05-30-2018, 03:14 PM
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Originally Posted by rickair7777 View Post
It actually destroyed the jackscrew. The initial investigation assumed the weight shift caused the crash, but they determined in the sim that it would have been recoverable, even with the degraded hydraulics. The cargo (a military vehicle) rolled back, through the aft bulkhead and took out the horizontal stabilizer jackscrew, I think that allowed the h. stab to float freely, which is typically not controllable. Same was that AS MD crash.
Good point.
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Old 07-17-2018, 03:48 AM
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On Jul 16th 2018 the airline released a 3 page press release stating, that cockpit voice and flight data recorders have been read out successfully. The investigation so far determined that the crew climbed the aircraft at too steep a pitch
angle (angle of attack) out of Havana leading to a stall and subsequent crash. The airline reasons that therefore the grounding of the airline as well as additional examinations imposed on the airline have no legal foundation, however, Mexico's DGCA have not responded to according requests by the airline. (Editorial note: according to ICAO rules only the investigation leader, Cuba's Accident Investigation Board, is permitted to talk about the progress of the investigation, participants in the investigation including the affected airline are not permitted to talk.

Some new info after the flight & data recorders were evaluated. Could be as simple as a stall caused by to high of a pitch on departure.
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Old 11-19-2018, 07:20 AM
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Any official statements on this crash? Black box, cvr, info?
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