BOAC
"- Oh! - what was that noise?"
BUFFET......
HN? Semantics? No, I think the computer was in control, regardless the Inputs of PF....
At the time of lost authority elevators, when the THS started to crank up again, the Stall was delayed, and for this reason, it can be said, that the actual Stall was caused not by the pilot, but by Autotrim...
Without Autotrim, the elevators can no longer keep the Nose UP, and thence, MUSH.... PF was ignoring trim, as he was taught to, he should not have. He was focused on overspeed, and he should not have...
He was flying G, on his lonesome, and he should not have, for the aircraft was duplicating his NU, degree by degree, and it should not have. Left alone, w/o THS, he experiences Nose Down on the natch, with more energy on hand, and less AoA. Does he recover the a/c? As yet, unknown. Or, does he eventually Stall, even without the THS.
I am going to say. No, for although at altitude, he is replicating a recovery from approach to STALL at low level, and with power, and reasonable AoA, he may mush along until he susses that he truly is not overspeed, and releases pressure on the stick, with engines blazing, until he recovers straight and level, without sink.
Can we say that the THS causes the aircraft to violate its type certificate?
IMO, Yes.....
Last edited by Lyman; 9th Aug 2012 at 18:30.