# SDR ASAA2016122419141

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 24, 2016
- Submitted: December 27, 2016
- Operation: Air carrier
- Aircraft: [N558AS](https://openairdocs.org/aircraft/N558AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35177
- Aircraft time: 40,075 hours, 11,759 cycles
- System (JASC): [2820 · Aircraft Fuel Distribution System](https://openairdocs.org/jasc/2820)
- Part: Actuator
- Part number: MA30A1017
- Part serial: AA570975
- Condition: Failed
- Location: Spar Valve
- Part time: 1,710 hours, 536 cycles
- Stage of operation: LD
- 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/ASAA2016122419141

## Discrepancy

DURING LANDING ROLLOUT, THE SPAR VALVE CLOSED LIGHT ILLUMINATED FOR APPROX 5 SECONDS. NO ABNORMAL ENGINE PARAMETERS NOTED.  ACFT GROUNDED.  REMOVED THE NR 1 SPAR VALVE ACTUATOR IAW AMM 28-22-11-000-804.  INSTALLED THE NR 1 SPAR VALVE ACTUATOR IAW AMM 28-22-11-400-804 & SPAR VALVE ACTUATOR OPERATIONAL TEST, OPS CHECKED OK.  PERFORMED ELECTRICAL BONDING RESISTANCE CHECKS OF SPAR VALVE ACTUATOR. CHECKED GOOD. IAW AMM 28-22-11, 737 SWPM 20-20-10.  PERFORMED FUEL SPAR VALVE ELECTRICAL CONTROL AND INDICATION TEST. TEST GOOD IAW AMM 28-22-00.

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