# SDR ASAA2016030715791

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 7, 2016
- Submitted: March 11, 2016
- Operation: Air carrier
- Aircraft: [N464AS](https://openairdocs.org/aircraft/N464AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 40714
- Aircraft time: 7,284 hours, 2,353 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- 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
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016030715791

## Discrepancy

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.