# SDR ASAA12510912

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 8, 2012
- Submitted: January 10, 2012
- Operation: Air carrier
- Aircraft: [N519AS](https://openairdocs.org/aircraft/N519AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36482
- Aircraft time: 11,082 hours, 3,379 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Servo
- Part number: 305RAA1
- Part serial: AS05989
- Condition: Faulty
- Location: Autothrottle Sys
- Part time: 7,038 hours, 2,672 cycles
- Stage of operation: TX
- 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/ASAA12510912

## Discrepancy

HOLDING SHORT OF RUNWAY AUTOTHROTTLE INOP.  WOULD NOT ENGAGE PRIOR TO TAKEOFF.  ACCOMP A/T SERVO MOTOR TEST FAULTED NR 2 ASM MSG 22 31781.  REPLACED NR 2 AUTOTHROTTLE SERVO MOTOR WITH SERVICABLE ONE.  ACCOMP A/T SERVO MOTOR INST TEST.  TEST PASS REF M/M 22 31 91 400 801.

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