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Overriding the A/T servo in FLCH or VNAV

Started by Hardy Heinlin, Sat, 9 Apr 2016 06:42

emerydc8

My throttles do not vibrate. Beta 15 is acting as if HOLD never engaged. If you pull the power back after pressing FLCH, you will see HOLD on the FMA, but you are fighting the autothrottles. The command N1 line will go back to whatever thrust it had originally targeted and the power will follow.

Hardy Heinlin

I see. Indeed, it's fighting until the target thrust is set, only thereafter it goes to "true" HOLD.

Hardy Heinlin


emerydc8


Britjet

BA sim. Tested override of FLCH in climb today. THR changed to HOLD when I advanced the levers.
Peter.

emerydc8

It's a good thing, too. Since Hardy already changed it. Thanks for verifying, Peter.

Jon D.