# SDR ASAA2023101545650

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 15, 2023
- Submitted: October 16, 2023
- Operation: Air carrier
- Aircraft: [N942AK](https://openairdocs.org/aircraft/N942AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44102
- Aircraft time: 5,163 hours, 1,504 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: IN
- 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/ASAA2023101545650

## Discrepancy

FFMG DEFECT - FMC DISAGREE INDICATED. GROUNDED - YES. FMC L + R 100 --> 6R SENSOR INTERROGATION INDICATES A STEADY SYNC ERROR. 8 CBS OPENED/TAGGED/UNTAGGED/CLOSED DURING MAINTENANCE. ACCOMPLISHED FMCS OPERATIONAL TEST PER B737-9 AMM 34-61-00-710-801 OBSERVING RESTORED OPERATION AND CORRECT INDICATIONS. ETOPS GROUND VERIFICATION SUCCESSFUL.

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