# SDR ASAA2023081444595

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 14, 2023
- Submitted: August 15, 2023
- Operation: Air carrier
- Aircraft: [N936AK](https://openairdocs.org/aircraft/N936AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43379
- Aircraft time: 4,565 hours, 1,365 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: TX
- 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/ASAA2023081444595

## Discrepancy

FMC DISAGREE MESSAGE DIDPLAYED, IT DISAPPEARED AFTER SWITCHING FROM GPU TO APU POWER. GROUNDED - YES. PERFORMED FMC DISAGREE FAULT ISOLATION PER IFIM 34-61-00-810-918, OPS CHECK GOOD, FMC DISAGREE MESSAGE EXTINGUISHED.

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