General Aviation Thread

[OldTex]

"....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. ...............As per the EAFR, the Engine 1 fuel cutoff switch transitioned from CUTOFF to RUN at about 08:08:52 UTC. The APU Inlet Door began opening at about 08:08:54 UTC, consistent with the APU Auto Start logic. Thereafter at 08:08:56 UTC the Engine 2 fuel cutoff switch also transitions from CUTOFF to RUN. "
The EAFR data reports a difference of 1 second in the cutoff of fuel, whilst the reverse procedure takes 4 seconds. Also reported is the fact that the fuel switches have a lockout feature designed to avoid inadvertent operation of each of the switches. It may be that the actual switches were not changed from RUN to CUTOFF, but the EAFR recorded a glitch that the FADEC interpreted as the switches being set to CUTOFF. The 4 seconds recorded for the restoration of the fuel switches might be consistent with each switch actually being put to CUTOFF and then reset to RUN by the pilots to restart the engines.
This is just my own opinion as to a possible scenario, noting I have no experience in piloting an aircraft or the specifics of the 787 cockpit.

 

[Sandhi Yudha]

"Shocking"....or could we expect this?
This video is about the disappearance of two A320s delivered to communist china around 2000. Those aircrafts were actually disassembled, and all parts copied and reverse engineered into the '100% indigenously designed and built' C919.

 

[John Fedup]

Why would a pilot cutoff and lie about it?
If you want to kill yourself, you just push the stick dont you?
And why would you then signal MAYDAY and try to restart the engines??
A "suicidal" pilot makes no sense!

Unless... he didnt want to expose himself...

If one of the pilots shut the fuel off, it was likely by mistake, followed by a CMA lie. As per my earlier post, if this is not the case and this cutoff event occurred on its own, it is a big problem for GE and Boeing.

 

[Sandhi Yudha]

If one of the pilots shut the fuel off, it was likely by mistake, followed by a CMA lie. As per my earlier post, if this is not the case and this cutoff event occurred on its own, it is a big problem for GE and Boeing.

Specially because if the last is the case, this means it will happen again. Like 737MAX's MCAS.

 

[John Fedup]

Specially because if the last is the case, this means it will happen again. Like 737MAX's MCAS.

Yep and that must be freaking GE/Boeing out if this is an unknown software/hardware issue. In Boeing case, this is critical as the Dreamliner is their premier product and repeat of the MAX saga could be fatal.

 

[Rob c]

Specially because if the last is the case, this means it will happen again. Like 737MAX's MCAS.

Looking at some of the U tube videos, it was said in some that the switches could be accidently move if a non mandatory air directive had not been implemented which provided a locking feature. It appears that Air India had not implemented it on all aircraft at this time. What is interesting is that the flight dater recorder shows that the switches were turned of and a few seconds later turned back on, but the photos' of the switches show them off. So were the switches turned back off by crash forces or is the data recorder wrong?
If the switches got turned off during the crash it shows that they could be turned off accidently.

 

[swerve]

IIRC all 787s should have the locking feature, but it was found that some didn't, so airlines were sent a directive to check & correct if necessary.

It's all rather murky at the moment.