Comment by heisenbit
2 days ago
The timing is really curious.
08:08:35 Vr
08:08:39 Liftoff
08:08:42 Engine 1 cut-off
08:08:42 Engine 2 cut-off
08:08:47 minimum idel speed reached
?? One pilot to other: why cut-off. Other: Did not do it
08:08:52 Engine 1 run
08:08:52 Engine 2 run
1 second to switch them both off and then 4 seconds to switch them both on. No one admitted to switch them off. They are probably going with fine comb over the audio and also the remains of the chared switches.
Looks like the engines react very quickly to cut-off so it is not clear whether the question about the cut-off is prompted by a glance to the switches or the feel of the airplane.
The big question is whether the switches were moved or something made it seem as if the switches were moved.
Well in the murder-suicide scenario it makes sense for the culprit to turn them off as quickly as possible. The longer time to turn them on could plausibly be a struggle or simply needing to fly the plane while reaching for each switch individually.
Assuming the person trying to kill themselves and a plane load of people would respond in an expected way to inquiry is also just a mistake.
It's not a rational decision, so there's no reason to expect rational decision making or explanation on the output.
Too many are willing to accept the Bart Simpson excuse of "I didn't do it" at face value.
> Looks like the engines react very quickly to cut-off so it is not clear whether the question about the cut-off is prompted by a glance to the switches or the feel of the airplane.
The workload is pretty high during the takeoff phase. The engines react right away when fuel flow is stopped. The engine displays can have some lag before data is updated.
Relighting an engine at low speed is not feasible - most need 230-250kts IAS before attempting the operation. Maybe you could do it if the APU was still running and could provide compressed air, but it takes about 20-30 seconds to start up amd then probably 5-10 more to spool up to full thrust. I am speculating here a bit, but the pilot did not have enough time to save the plane even if he did everyting right and as fast as humanly possible.
All this aside is overshadowed by the limited amount of time the pilot flying (I would assume the captain in this case since there was only one ATPL pilot in the cockpit) had to troubleshoot the issue of a dual engine failure - as this is what would have felt to him - during takeoff.
> I would assume the captain
The report states the FO was pilot flying.
My bad. I assumed it was the captain since the report says the FO only has a CPL license. And I was a bit surprised he could fly on a comercial airplane with only that kind of license and not an ATPL one.