# SDR ASAA2015011010192

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 10, 2015
- Submitted: January 12, 2015
- Operation: Air carrier
- Aircraft: [N442AS](https://openairdocs.org/aircraft/N442AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43293
- Aircraft time: 4,402 hours, 1,398 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Circuit Breaker
- Condition: Tripped
- Location: Autothrottle
- Stage of operation: TX
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2015011010192

## Discrepancy

CIRCUIT BREAKER AUTOTHROTTLE DC-1 ON P18-1 E, IS TRIPPED ON PRE-FLIGHT INSPECTION.  ACFT GROUNDED.  FLIGHT LEG NR 1 SHOWS 8 FAULTS FOR 28V INVALID AT LANDING, ELEV 385, SUSPECT SEATBELT.  IAW MM 20-60-01, RESET AT DC-1 CIRCUIT BREAKER, PERFORMED REQUIRED LWMP TESTS IAW FIM 22-11/802 BITE GRP 43.  OPS NORMAL.  NO HISTORY 30 DAYS.  GROUND VERIFICATION GOOD.

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