# SDR ASAA2012112993387

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 29, 2012
- Submitted: December 4, 2012
- Operation: Air carrier
- Aircraft: [N512AS](https://openairdocs.org/aircraft/N512AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 39043
- Aircraft time: 16,364 hours, 5,177 cycles
- System (JASC): [2820 · Aircraft Fuel Distribution System](https://openairdocs.org/jasc/2820)
- Part: Actuator
- Part number: MA30A1001
- Part serial: AA161385C
- Condition: Unknown
- Location: A/C Bay
- Part time: 16,425 hours, 5,193 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2012112993387

## Discrepancy

DURING NR 1 ENGINE START, ENGINE FAILED TO LIGHT OFF.   FOUND NR 1 ENGINE SPAR VALVE CIRCUIT BREAKER TRIPPED.  RESET NR 1 ENGINE SPAR VALVE CIRCUIT BREAKER REF MM 20-60-01. RAN NR 1, NR 1 ENGINE SPAR VALVE INDICATOR LIGHT WENT DIM TO BRIGHT TO OFF, WORKS NORMAL.  MM 28-22-11-400-804 STEP 5.H & MM 28-22-00-710-801 STEP 4.C.(3). NO ABNORMAL START, ENGINE STARTS NORMAL AT THIS TIME. GROUND VERIFICATION, OP CHECKED GOOD.   R & R NR1 ENG SPAR VALVE ACTUATOR REF MM 28-22-11-000-804 AND MM 28-22-11-400-804.

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