Service difficulty report · Servo Motor · Boeing 737990ER

Difficulty date
January 17, 2023
Submitted
January 19, 2023
Operation
Air carrier
Aircraft
N462AS
Make and model
Boeing 737990ER
Aircraft serial
36362
Aircraft time
32,156 hours, 10,177 cycles
Part
Servo Motor
Condition
Faulted
Location
Nr 1
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
D

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

What was found

ON T/O CLEARANCE & PUSHING TOGA AFTER STABLE CALL AT 40% BOTH SIDES, ONLY #2 THROTTLE MOVED AND ONLY ABOUT 2 THROTTTLE DIAMETERS, #1 THROTTLE DIDN`T MOVE. ABORT TAKEOFF & CLEARED RUNWAY. ON TAXI-OUT & UPHILL NOTED 1/2 THROTTLE DIAMETER SPLIT - #2 AHEAD BY 1/2 AT 30% ON BOTH SIDES. GROUNDED - YES. PERFORMED A/T BITE CHECK REF FIM 22-31 TASK 861. LOGGED ASM #1 FAULT 22-31687. #1 SERVO MOTOR FAILED INTERACTIVE TEST. BEGAN FIM 76-05 TASK 801. FOUND TWO ITEMS ON DEU #2 INPUT MONI - DISCRETE PAGE STEP E. 1) L PACK OFF & R PACK HIGH DID NOT CHANGE STATE. IAW AMM 76-11-05-826-801-F00, AT IDLE, #1 ENGINE TLA IS 36.85, #2 ENGINE TLA 36.28. ACCOMPLISHED LANDING WARNING SYSTEM TEST & PASSED IAW AMM 31-51-00-730-802.