# SDR ASAA2018122617528

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 21, 2018
- Submitted: December 27, 2018
- Operation: Air carrier
- Aircraft: [N440AS](https://openairdocs.org/aircraft/N440AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41705
- Aircraft time: 20,644 hours, 6,821 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Malfunctioned
- Stage of operation: TX
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018122617528

## Discrepancy

DURING PRE-FLIGHT, RECEIVED "FMC DISAGREE" MSG ON CDU. GROUNDED - YES. PERFORMED FMC DISAGREE QRH CHECKLIST. FMC DISAGREE MESSAGE DID NOT APPEAR. RE-PERFORMED FMC PREFLIGHT PER THE QRH. *INFO ONLY WRITE-UP PER QRH*.

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