Hi jb, with the QF 32 Singapore incident, I believe the number 1 engine was unable to be shut down after it had landed. Do you know what percentage of thrust was being provided by this engine? Did it make braking and steering an issue on the landing roll? I remember reading that they used all but a few hundred feet of runway, and was wondering if the number one engine was a factor in this. Once again, I appreciate your reply.
I think the QF32 incident report must be very close to final, so keep an eye out for that on the ATSB site.
My understanding:
The #1 engine behaved normally in flight (it was in degraded mode, but that's about the same mode the 767-200 engines were in all the time). IN FLIGHT, it was doing was it was told to do, so it had no effect upon the landing. Rumours from shortly after the event had it that this engine was operating at climb power...it would have been impossible to fly the approach in that case. Ops were basically normal until they tried to shut it down.
As it turns out, Airbus had thought about this, and ran the electronics that control the thrust setting through one end of the pylon, and the wiring to shut it down through the other. So, you'd likely have control of the engine but not be able to shut it down, or, no control, but be able to get rid of it. Not a bad solution, especially given the designers were playing with contingency events that they hoped would never happen.
Landing distance. Well, from what I recall now, there was degraded braking, no slats (so high approach speed), partial spoilers, heavy (over) weight, partial reverse. And probably a bunch of other things I don't recall. Using all of the runway in those circumstances is more than acceptable.