# SDR ASAA2020012753970

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 25, 2020
- Submitted: January 28, 2020
- Operation: Air carrier
- Aircraft: [N483AS](https://openairdocs.org/aircraft/N483AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36350
- Aircraft time: 17,881 hours, 5,744 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Malfunctioned
- Location: Left
- Stage of operation: CR
- 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/ASAA2020012753970

## Discrepancy

LEFT FMC FAILED TWICE AT CRUISE. GROUNDED - YES. RELEASED PER MEL 34-36T LEFT HAND FMC INOP. L FMC LOGGED PGM FAULT. COULD NOT DUPLICATE MALFUNCTION, L FMC OP CK NORMAL REF B737-900 FIM 34-61 TASK 837.

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