ABSOLUTELY NEW 2011 Season Air Crash Investigation Stalled In The Sky Colgan Air Flight 3407 Part 3
Uploader Comments (iJustFlyDammit)
All Comments (31)
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@armchairexpertnow the Dash 8-400 does not have auto throttle so the autopilot will do whatever it needs to maintain a set altitude that is programmed in regardless of airspeed.
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Autopilot programming failure
The Autopilot was operating the plane when it allowed airspeed to decline from 180 knots to 131 knots and the premature stick shaker warning.
Why wasn't the Autopilot programmed to maintain a safe airspeed by increasing engine power and to adjust the attitude to the best pitch?
Inadequate design of the de-icing function
Even with the de-icing function turned on, ice accumulated on the wings so much that it caught the attention of both pilots.
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@bpeaceful87 ...an aerodynamic stall has nothing to do with speed or engines (you mean compressor stall) - an aerodynamic stall is when the wings exceed the critical angle of attack (typically 16-20 degrees) and the airflow separates from the wing,becomes turbulent and hits the elavator - felt as buffet on the stick. lowering the nose to break the stall reduces the A of A and allows airflow over the wings/stabilser which creates the lift that is rather helpful to flight!
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This thing has pilot error written all over it.
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@gf4life ...exactly ..the stick shaker will activate if that happens or if an aircraft angle of attack is to steep and it will stall the engines. When you move the yoke forward you let the engines take in more air increasing speed and exiting that 'stall speed' noted in the video (the red lines creeping up on his display screen). He basically did the exact opposite and forced the engine stall to occur.
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so does the stick shaker activate when they are flying too slow for the conditions? Then all the pilot needs to do is push the control forward and nose down???
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This is the second recent episode where pilots have ignored their air speed indicator and been surprised by the stick shaker. In the other episode there were 3 crew in the cockpit yet nobody noticed the loss of speed until it was too late. There should be a mandatory AUDIBLE warning of critically low airspeed, getting louder approaching stall, well before the stick shaker cuts in. No matter how tired they were however, it''s still shocking that the crew could make such a basic piloting error.
@shaun91255
oh yeah for sure, its an ABSOLUTE necessity and also simply being aware you are going into the stall in the first place
i guess it gets tricky when it happens happens all of a sudden to tired pilots
iJustFlyDammit 10 months ago
@wwwwowomgcom
coming up buddy, subscribe to keep updated for the next turkish new episode
iJustFlyDammit 11 months ago