# SDR ASAA2021070335243

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 3, 2021
- Submitted: July 7, 2021
- Operation: Air carrier
- Aircraft: [N431AS](https://openairdocs.org/aircraft/N431AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43255
- Aircraft time: 28,484 hours, 9,172 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Failed
- 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/ASAA2021070335243

## Discrepancy

AFTER LANDING CAPT'S AND F/O'S FMC'S FAILED. REMAINED OFF LINE FOR:25-45 SECONDS. GROUNDED - YES. PERFORMED B737-900 FIM 34-61 TASK 801 AND FOUND PGM FAULT IN LEFT AND RIGHT FMC. PERFORMED FIM 34-61 TASK 807 AND BOTH FMCS OPS TEST GOOD.

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