# SDR ASAA20120329297

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 23, 2012
- Submitted: March 29, 2012
- Operation: Air carrier
- Aircraft: [N596AS](https://openairdocs.org/aircraft/N596AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35688
- Aircraft time: 14,794 hours, 4,747 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Switch
- Condition: Inoperative
- Location: Autothrottle
- Part time: 9,676 hours, 3,106 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA20120329297

## Discrepancy

AUTOTHROTTLE ARM SWITCH WILL NOT ENGAGE.  PERFORMED AUTO THROTTLE BITE 22-31-00 REQS ASM 1 REPLACEMENT.  REPLACED NR 1 ASM PER AMM TASK 22 31 91 020 801/ 22 31 91 400 801.  OP'S CHECKED GOOD.

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