What was found
AUTOTHROTTLE WILL NOT ENGAGE. ACFT GROUNDED. MULTIPLE NR 1 ASM FAULTS IN HISTORY. REPLACED THE NR 1 AUTOTHROTTLE SERVO MOTOR IAW AMM 22-31-91/401. OPS CHECKED GOOD.
- Difficulty date
- October 29, 2017
- Submitted
- November 2, 2017
- Operation
- Air carrier
- Aircraft
- N492AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44110
- Aircraft time
- 7,605 hours, 2,589 cycles
- Engine
- Cfmint CFM567B27E
- System (JASC)
- 2230 · Auto Throttle System
- Part
- Servo Motor
- Part number
- 305RAA1
- Part serial
- AS08879
- Condition
- Faulted
- Location
- Autothrottle
- Part time
- 6,472 hours, 2,035 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.