# SDR ASAA2017081121620

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 11, 2017
- Submitted: August 14, 2017
- Operation: Air carrier
- Aircraft: [N531AS](https://openairdocs.org/aircraft/N531AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35199
- Aircraft time: 27,900 hours, 8,299 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Malfunctioned
- Location: Left
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017081121620

## Discrepancy

LEFT FMC IS INOPERATIVE, KEEPS RESETTING.  ACFT GROUNDED.  UNABLE TO DUPLICATE DEFECT.  FMCS BITE IAW FIM 34-61, TASK 801 AND FIM 34-61, TASK 837 SHOWED NO FAULTS LOGGED BY EITHER FMC FOR LAST TEN LEGS.  PERFORMED FMC SOFTWARE CONFIGURATION CHECK IAW AMM 34-61-00-750-801, AND FMCS OPERATIONAL TEST IAW AMM 34-61-00-710-801 - ALL TESTS PASSED.

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