# SDR ASAA0954774

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2009
- Submitted: March 17, 2009
- Operation: Air carrier
- Aircraft: [N517AS](https://openairdocs.org/aircraft/N517AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35197
- Aircraft time: 625 hours, 178 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Servo
- Part number: 305RAA1
- Part serial: AS04999
- Condition: Faulty
- Location: Autothrottle Sys
- Part time: 4,415 hours, 2,017 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/ASAA0954774

## Discrepancy

AUTO THROTTLES INOP WILL NOT ENGAGE IN ANY MODE.  REPLACED NR 1 AUTO THROTTLE SERVO MOTOR PER MM 22 31 91 400 801.  OPS NORMAL.

---
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.