Originally Posted by
LarryJ
There was also a military flight 191 crash.
Had nothing to do with the engine power. They slowed to V2--takeoff safety speed--by increasing pitch attitude to climb to their acceleration altitude. They had no way of knowing that the departure of the engine took out the left-wing hydraulics which caused the leading edge devices to retract resulting in a stall speed for the left wing that was above V2. They followed the correct procedure.
Exactly. It wasn't fully understood at the time that a hydraulic loss of the type experienced could result in an asymmetrical slat deployment and that the hydraulic loss rendered inoperative the slat disagreement warning. This is a classic case where pilots followed proper procedures that they had been trained for in a case where the procedures themselves were wrong for the situation. According to the NTSB report, a mere 6 knots of addirional airspeed would have kept the left wing from stalling (report at page 68).
Here's the wikipedia article on the accident:
http://en.wikipedia.org/wiki/America...nes_Flight_191
and the NTSB report is here:
http://libraryonline.erau.edu/online...s/AAR79-17.pdf