# SDR ASAA1058112

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 28, 2010
- Submitted: August 2, 2010
- Operation: Air carrier
- Aircraft: [N585AS](https://openairdocs.org/aircraft/N585AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35683
- Aircraft time: 11,007 hours, 3,339 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Servo
- Part number: 305RAA1
- Part serial: AS06322
- Condition: Faulty
- Location: Autothrottle Sys
- Part time: 166 hours, 54 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA1058112

## Discrepancy

AUTO THROTTLE WILL NOT ENGAGE.  PERFORMED AUTO THROTTLE INTERACTIVE TEST INTERACTIVE TEST SHOWS ASM NR 2 FAULT 10 DEG RATE MESSAGE 22 31795 THE TORQUE TEST THE NR 1 THROTTLE WOULD MOVE FORWARD AND AFT THE NR 2 THROTTLE STAYED IN THE IDLE POSITION SUSPECT BAD NR 2 ASM.  REPLACED NR 2 AUTO THROTTLE SERVO MOTOR.  OPS CHECK GOOD.  REF M/M 22 31 91 020 801 AND 22 31 91 400 801.

---
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.