# SDR ASAA1158733

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 5, 2011
- Submitted: January 10, 2011
- Operation: Air carrier
- Aircraft: [N519AS](https://openairdocs.org/aircraft/N519AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36482
- Aircraft time: 7,143 hours, 2,125 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Servo
- Part number: 305RAA1
- Part serial: AS05978
- Condition: Failed
- Location: Autothrottle Sys
- Part time: 4,731 hours, 1,470 cycles
- Stage of operation: TO
- 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/ASAA1158733

## Discrepancy

DURING T/O ROLL AUTOTHROTTLES DISENGAGED WOULD NOT RE-ENGAGE.  REPLACED NR 2 A/T SERVO MOTOR REF MM 22 31 91, OPS CHECK NORMAL.

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