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...At the first realization that pitch is not controllable (even with full forward yoke pressure), roll hard to the left or right to point the lift vector on or even below the horizon (90 to 100 degrees of bank angle). This causes the nose to quickly fall below the horizon and airspeed to rapidly increase assuming you leave power at full...
Of course they also could have been wallowing in a stall the whole way down.
Either way, the stuff of nightmares...
Line Holder
Joined: Feb 2013
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From: 88B
The video almost looks like they tried. One wing drops and the nose falls through the horizon, unfortunately they were on the deck before they could get the pitch back to level.
Of course they also could have been wallowing in a stall the whole way down.
Either way, the stuff of nightmares...
Of course they also could have been wallowing in a stall the whole way down.
Either way, the stuff of nightmares...
4x
:-)
Joined: Feb 2007
Posts: 7,339
Likes: 1
The video almost looks like they tried. One wing drops and the nose falls through the horizon, unfortunately they were on the deck before they could get the pitch back to level.
Of course they also could have been wallowing in a stall the whole way down.
Either way, the stuff of nightmares...
Of course they also could have been wallowing in a stall the whole way down.
Either way, the stuff of nightmares...
Jury's out until they crack into the FDR and make some chilling cartoons for the rest of us to learn from.
Incredibly sad. We all need to try to learn anything we can from the loss of these lives, and the following is meant for that purpose:
If they had cargo come loose, and If that resulted in an instant CG movement beyond the aft limits, a full aerodynamic stall and departure from controlled flight may have been preventable. I got to experience this very thing in the test environment, and the recovery technique is not immediately logical. At the first realization that pitch is not controllable (even with full forward yoke pressure), roll hard to the left or right to point the lift vector on or even below the horizon (90 to 100 degrees of bank angle). This causes the nose to quickly fall below the horizon and airspeed to rapidly increase assuming you leave power at full. As airspeed increases, level the wings and accept that the nose will rapidly rise again. Repeating this pattern results in gaining altitude with each roll reversal, and buys time to trim the stabilizer to the full nose down limit, select full flaps, and the aircraft is controllable with full forward yoke pressure.
There's no way you can pull this off without the instant reaction that only comes from prior training and mental preparation. Assuming the crew never got this training, they sadly had no chance. Not saying with certainty this recovery technique would have worked in this condition, but it may have.
Something to think about.
Carl
If they had cargo come loose, and If that resulted in an instant CG movement beyond the aft limits, a full aerodynamic stall and departure from controlled flight may have been preventable. I got to experience this very thing in the test environment, and the recovery technique is not immediately logical. At the first realization that pitch is not controllable (even with full forward yoke pressure), roll hard to the left or right to point the lift vector on or even below the horizon (90 to 100 degrees of bank angle). This causes the nose to quickly fall below the horizon and airspeed to rapidly increase assuming you leave power at full. As airspeed increases, level the wings and accept that the nose will rapidly rise again. Repeating this pattern results in gaining altitude with each roll reversal, and buys time to trim the stabilizer to the full nose down limit, select full flaps, and the aircraft is controllable with full forward yoke pressure.
There's no way you can pull this off without the instant reaction that only comes from prior training and mental preparation. Assuming the crew never got this training, they sadly had no chance. Not saying with certainty this recovery technique would have worked in this condition, but it may have.
Something to think about.
Carl
The video as horrendous as it is to see does something an NTSB report cannot do and that's get everyone's attention. Normally in a videoed accident it's "uh, pilot error, I would never have..." but this one just hits home and your heart goes out to those seven guys and their families.
:-)
Joined: Feb 2007
Posts: 7,339
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Interestingly, I combed through the Delta 747 manuals on DeltaNet and it looks like the Delta training manual has a procedure laid out as Carl states. The Boeing company manual does not, unless I missed it.
At the first realization that pitch is not controllable (even with full forward yoke pressure), roll hard to the left or right to point the lift vector on or even below the horizon (90 to 100 degrees of bank angle). This causes the nose to quickly fall below the horizon and airspeed to rapidly increase assuming you leave power at full. As airspeed increases, level the wings and accept that the nose will rapidly rise again.
Might work at 10,000 feet but I don't think you'd have enough room to perform a maneuver like that right after takeoff.
Gets Weekends Off
Joined: Apr 2013
Posts: 326
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From: Retired AF/A320 FO
We do this drill in C-17 for runaway pitch trim. It's tough to do with less than 200+ knts and some altitude to play with. Since the reaction would have needed to be so close to the ground and airspeed at takeoff speeds not sure you could keep it from stalling past 60 degrees bank or digging in a wing. I'm sure we'll do it in the sim shortly. The gear were still down and with the flaps probably in takeoff that would have been a factor to help and hinder as well.
Gets Weekends Off
Joined: Jan 2009
Posts: 326
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From: Nice while it lasted
A procedure such as Carl's might work in a "steady state" condition. However, if the cargo did come loose it was now free floating in the back. Who is to say it didn't all come crashing back forward as the nose fell through the horizon? Those guys never had a chance. RIP.
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