Service difficulty report · Autothrottle Sys · Boeing 777FS2

Difficulty date
July 9, 2017
Submitted
July 10, 2017
Operation
Air carrier
Aircraft
N887FD
Make and model
Boeing 777FS2
Aircraft serial
41066
Aircraft time
18,828 hours, 3,088 cycles
Part
Autothrottle Sys
Condition
Malfunctioned
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AFTER BOTH ENGINES WERE STARTED. WHILE AWAITING THE GROUND CREW TO CLEAR THE WING. THE AUTO THROTTLE SERVO ENGAGED AND ATTEMPTED TO ADVANCE THE POWER. CAPTAIN RESTRAINED THRUST LEVER MOVEMENT, NO INDICATIONS OR COCKPIT EFFECTS OTHER THAN THE AUDIBLE NOISE FROM ATMS SERVOS, AUTO THROTTLE DISCONNECT SELECTED AND SERVOS DISENGAGED. NO AUTO THROTTLE DISCONNECT ALERT ANNUNCIATED. RESET POWER FOR LEFT AND RIGHT AIMS, SPOTTED NO EXISTING FAULTS, HISTORY IN MAT WAS DUMPED, CORRELATED THE AIMS BITE DATA FOR FURTHER ANALYSIS IAW MT 22-014. ACFT OK TO CONTINUE SERVICE.

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