# SDR ASAA2017011019301

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 10, 2017
- Submitted: January 12, 2017
- Operation: Air carrier
- Aircraft: [N464AS](https://openairdocs.org/aircraft/N464AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 40714
- Aircraft time: 10,729 hours, 3,485 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Warning Light
- Condition: False Activation
- Location: Fmc
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017011019301

## Discrepancy

RECEIVED A RIGHT FMC FOR 1 MINUTES THEN SYSTEM SELF-CORRECTED TO NORMAL DUAL FMC OPS, NO CORRECTIVE ACTION WAS TAKEN. GROUNDED - YES. REF B737-900 FIM 34-61 TASK 837. NO CURRENT FAULTS ON FMC, HISTORY SHOWS INTERMITTENT FAULTS ON LEGS 2, 39. NO HARDWARE FAULTS DETECTED. FMC TRANSFER SWITCH RETURNED TO NORMAL POSITION.

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