Posts by user "Uplinker" [Posts: 5 Total up-votes: 13 Pages: 1]

Quote:

"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."

This might have been discussed but as has been suggested upthread; a possible scenario is that at some point, PIC took their hands off the thrust levers and/or placed them in a guarding position behind the thrust levers at their base - but by doing so unfortunately nudged the Fuel cut-off switches to 'Off' - perhaps 'helped' by there either being incorrectly fitted locking mechanisms or worn locking mechanisms ?

This crossed my mind too. This is called an "action-slip" by designers: a valid and frequently practised action being applied to entirely the wrong situation, resulting in an (extremely) invalid action.

On this flight, the relative drop in noise and calm that follows the landing gear doors closing after the gear retracts during the initial climb, might have caused an action slip by PIC to perform the engine shut-down procedure used when parking on stand.

Unlikely though, I would hope.

Ah, OK, noted re the gear. But there must have been some other distraction that led to an action-slip. For example, why wasn't the gear retracted ? - it is a very clear sequence: " V1......Rotate......positive climb......gear up....." So something else must have happened to distract both pilots.

Perhaps the brakes were hot, so maybe they deliberately delayed bringing the gear up to let them cool first - (an occasionally needed but standard procedure). This uncommon sequence in turn might possibly have led to an action slip.

But action-slips are exactly that. A valid action applied to completely the wrong situation. E.g putting the milk in the bin or the microwave instead of back in the fridge.

Highly unlikely, I know, but..............

That's exactly what normal line pilots are taught and trained to do as well. Switch by switch, lever by lever. Each and every one confirmed before moving.

.........At least it was 5 years ago. I sincerely hope it still is.

Much much longer ago for my base check in a Shorts 360, there were no SIMs, so engine failures were simulated in the real flying aircraft. Sure enough, while I was flying, my PM, (also my examiner) was shutting the engine down, he asked me to confirm and when I looked up he was (deliberately) holding the wrong lever, to see if I really was checking.

I was
.

Yes, aka the James Reason Swiss cheese model.