←back to thread

299 points cjr | 1 comments | | HN request time: 0.211s | source
Show context
decimalenough ◴[] No.44536914[source]
> The aircraft achieved the maximum recorded airspeed of 180 Knots IAS at about 08:08:42 UTC and immediately thereafter, the Engine 1 and Engine 2 fuel cutoff switches transitioned from RUN to CUTOFF position one after another with a time gap of 01 sec. The Engine N1 and N2 began to decrease from their take-off values as the fuel supply to the engines was cut off.

So the fuel supply was cut off intentionally. The switches in question are also built so they cannot be triggered accidentally, they need to be unlocked first by pulling them out.

> In the cockpit voice recording, one of the pilots is heard asking the other why did he cutoff. The other pilot responded that he did not do so.

And both pilots deny doing it.

It's difficult to conclude anything other than murder-suicide.

replies(25): >>44536947 #>>44536950 #>>44536951 #>>44536962 #>>44536979 #>>44537027 #>>44537520 #>>44537554 #>>44538264 #>>44538281 #>>44538337 #>>44538692 #>>44538779 #>>44538814 #>>44538840 #>>44539178 #>>44539475 #>>44539507 #>>44539508 #>>44539530 #>>44539532 #>>44539749 #>>44539950 #>>44540178 #>>44541039 #
1. ssivark ◴[] No.44539507[source]
> So the fuel supply was cut off intentionally. The switches in question are also built so they cannot be triggered accidentally

FAA issued a Special Airworthiness Information Bulletin SAIB NM-18-33 in 2018 warning that on several Boeing models including the 787 the locking mechanism of the fuel switches could be inoperative.

https://www.aviacionline.com/recommended-versus-mandatory-th...

Per FAA the checks were recommended but not mandatory.