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Old 8th Apr 2016, 12:16
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NSEU
 
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Originally Posted by Bunk-Rest
Irrespective, do you think Boeing would have not thought of this in the system design?
Do you think that this might happen?
Are you really flying 747's ?
I didn't know the 744 did this either (as a former Avionics Maintenance Engineer). My maintenance training notes tell me that the command to idle the thrust levers during Autoland comes from the AFDS system. Would you so readily assume that the command also happens with the AFDS disengaged if you had no previous Boeing experience?

I made an earlier comment on the 737NG about its thrust levers going to idle at 27' with the A/P not engaged (but the aircraft on the ILS) because I thought it different from the 744. Apparently it's not. The training notes for the 737NG and the Maintenance Manual are much clearer in this respect. The signal path and logic is shown in diagrams. The text tells you what happens.

There are lots of things on the 744 and other Boeing aircraft which go against intuition.
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