Service difficulty report · Servo · Boeing 737990ER

Difficulty date
March 7, 2016
Submitted
March 11, 2016
Operation
Air carrier
Aircraft
N464AS
Make and model
Boeing 737990ER
Aircraft serial
40714
Aircraft time
7,284 hours, 2,353 cycles
Part
Servo
Part number
305RAA1
Part serial
AS10179
Condition
Failed
Location
Autothrottle
Part time
7,293 hours, 2,356 cycles
Stage of operation
NR
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

AUTOTHROTTLE DISENGAGED. WOULD NOT RE-ENGAGE. ACFT GROUNDED. INFLIGHT FAULTS FAILED NR 2 ASM. THROTTLE SERVO TEST ALSO FAILED NR 2 ASM. R & R AUTOTHROTTLE SERVO NR 2 IAW AMM 22-31-91-400-801/22-31-91-020-801.