# SDR ASAA2022100840204

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 8, 2022
- Submitted: October 10, 2022
- Operation: Air carrier
- Aircraft: [N918AK](https://openairdocs.org/aircraft/N918AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44083
- Aircraft time: 5,113 hours, 1,604 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Cdu
- Part number: UNKNOWN
- Condition: Fault Message
- Location: Unknown
- 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/ASAA2022100840204

## Discrepancy

CREW REPORTS FMC DISAGREE MESSAGE. GROUNDED - YES. BOTH FMCS SET ON-GROUND RIGHT CDU FAILURE. GENERATING FAULTS ARE CDU-R ARINC-INTERMITTENT-RATE, AND CDU-R INTERMITTENT-FAILURE. RESET CDU RIGHT POWER. FMC DISAGREE MESSAGES EXTINGUISH. ACCOMPLISHED RIGHT CDU INSTALLATION TESTS PER B737-9 AMM 34-61-01 AND SOFTWARE CONFIGURATION TESTS PER AMM 34-61-00 AND B737-9 AIPC 34-61-01-10 W/ NO DEFECTS INDICATED. ETOPS GROUND VERIFICATION SUCCESSFUL.

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