# SDR ASAA2021052434909

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 24, 2021
- Submitted: May 27, 2021
- Operation: Air carrier
- Aircraft: [N440AS](https://openairdocs.org/aircraft/N440AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41705
- Aircraft time: 28,536 hours, 9,188 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Key
- Condition: Detached
- Location: Fmc
- Part time: 28,531 hours, 9,183 cycles
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021052434909

## Discrepancy

RIGHT SIDE FMC MCDU LINE SELECT BUTTON R3 DETACHED. GROUNDED - YES. REMOVED & REPLACED RIGHT SIDE FMC MCDU REF B737-900 AMM 34-61-01. OPS CHECK GOOD.

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