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Ludoskull
12-10-2018, 04:44 PM
Can anyone explain why during Alternate Flap Extension on the 767 the following point is stated as part of the QRH drill?


If flap lever is UP:
Flap lever . . . . . . . . . . . . . . . . . . . . . . . . . 1
This prevents uncommanded autothrottle
disengagement.


Cannot understand why the lever at Posn 1 stops uncommanded A/T disengagement.


awacs
12-10-2018, 05:02 PM
Autothrottle disconnect occurs if a fault in the active autothrottle mode is detected, or when a reverse thrust lever is raised to reverse idle. The A/T DISC
light illuminates and the EICAS caution message AUTOTHROT DISC dis-

“The active mode..” faults is the only thing that I can apply.

Awacs

JackStraw
12-14-2018, 03:43 AM
It has something to do with how the FSEU and the TMC talk to each other and update. Uncommanded autothrottle disconnection isn’t likely in that case but moving the flap lever to 1 removes the small chance of it happening.




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