# SDR ASAA2019102183053

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2019
- Submitted: October 22, 2019
- Operation: Air carrier
- Aircraft: [N428AS](https://openairdocs.org/aircraft/N428AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36353
- Aircraft time: 14,509 hours, 4,661 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Key
- Condition: Inoperative
- Location: Fmc
- Component: Fmc
- Component part number: 1741010303
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019102183053

## Discrepancy

F/O FMS CONTROL HEAD BUTTONS 1 RIGHT, 3 RIGHT, 5 RIGHT NOT RESPONDING WHEN PRESSED. GROUNDED - YES. REPLACED F/O'S FMC DISPLAY UNIT REF B737-900 AMM 34-61-01-000-802. OPS CHECK NORMAL REF AMM 34-61-01-400-802.

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