# SDR ASAA2022051538343

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 2022
- Submitted: May 17, 2022
- Operation: Air carrier
- Aircraft: [N586AS](https://openairdocs.org/aircraft/N586AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35189
- Aircraft time: 52,682 hours, 15,794 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Part number: 1762000101
- Part serial: 005480
- Condition: Failed
- Location: Ee Rack 5
- Part time: 40,919 hours, 12,088 cycles
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022051538343

## Discrepancy

ON ARRIVAL INTO SEATTLE FMC 2 FAILED MULTIPLE TIME COMING BACK EACH TIME APPROX 2 MINUTES LATER FMC 1 WAS MEL' D RESULTING IN DUAL FMC FAILURE. GROUNDED - YES. REPLACED FMC 2 REF B737-800 AMM TASK 34-61-02-400-801. PERFORMED SOFTWARE LOAD PER AMM TASK 34-61-00-470-806 AND FMCS PERFORMANCE FACTOR ADJUSTMENT REF AMM TASK 34-61-00-800-801. OPERATIONAL CHECK NORMAL REF: AMM 34-61-00-710-801.

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