Originally Posted by
Mr Optimistic
Thank you. Looks like the call for flaps didn't get monitored too well here. In this case there seems to be an odd isolation/disconnect between them. Not sure how the pf recognised no thrust but did nothing about it. As a non pilot it is a surprise how quickly a situation can deteriorate to unrecoverable. Thanks again.
They were descending. How much thrust would they need? The PM should have been noticing the drop in air speed.
The PF heard the engines making power, just as they had been.
There would have been terrible confusion when the speed loss was noted and adding more power didn't change the speed, but I expect it was too late to scan all the instruments before finally getting to the prop feather levers.
While one might think that would be the first place to look, what would have been the action that would have changed their position that the PF would have based that scan on? At the same time the PF had no doubt been confused by the requirement to ask for the flap setting a second time as that trim change (or lack of it after the first request) would have been noticeable. The PF depended on the experienced PM to do what was agreed upon and not make a horrible screw-up.
As I mentioned earlier - those levers should have a related voice recording overriding every other sound the cockpit can make with "FEATHER 1 FEATHER 2" because the results of unexpected feathering are devastating.