bubbers44 wrote:
If the PF had done his part with the UAS immediate actions he would have verified AT off AP off and FD off, pitch 5 degrees and climb power. They didn't do that so crashed
IF... !
But we do know, with more than 36 UAS events, that it seems difficult to recognize such an event (
Thread 7 #1321) :
However, in BEA IR2 was evidence of inappropriate UAS recognition (and therefore incorrect subsequent procedure) by several crews, not just AF447
It seems to me that we must go to "Machine-Man Interface" Thread, rather than "HF" Thr.
Lyman
NO ONE knows what the screens showed ...
But we have some idea:
- PF Erroneous airspeed display between 02:10:07 and 02:11:37 (Final, page 93), PNF between 02:10:07 and 02:
10:37
- Fantastic FD pitch orders till 02:11:40
AND stall warrning since 02:10:51 (Final, p 96)
- FD1 + FD2 mostly not available between 02:10:08 and 02:10:47,
and disapeared again at 02:11:40 (IR 3 CVR transcript and Final report)
We know(?) that PF was following FD and pulling up (Final, p 96).
But why NU SS inputs after 02:11:40 ?
- CAS/ISIS CAS out of duty (NCD) beginning 02:12:14 (and computerized again btw 02:13:00 and 02:13:24 (IR 3 CVR transcript),
- Invalid AOA beginning at 02:11:40.
And plenty of "may be", "perhaps" in Final report.