# SDR ASAA2021090235852

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 2, 2021
- Submitted: September 7, 2021
- Operation: Air carrier
- Aircraft: [N491AS](https://openairdocs.org/aircraft/N491AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44109
- Aircraft time: 21,434 hours, 6,843 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Electronic Unit
- Part number: 2042M67P04
- Part serial: FFFB4440
- Condition: Failed
- Location: Autothrottle
- Part time: 21,479 hours, 6,855 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021090235852

## Discrepancy

AUTO THROTTLE WILL NOT ARM. GROUNDED - YES. FOUND EEC FAILURE DURING BITE. REF LOGPAGE 60212447 FOR EEC REPLACEMENT. PERFORMED REPAIR CONFIRMATION REF B737-900 AMM 22-31 TASK 801. ETOPS GROUND VERIFICATION GOOD.

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