# SDR ASAA2015102513529

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 25, 2015
- Submitted: October 27, 2015
- Operation: Air carrier
- Aircraft: [N531AS](https://openairdocs.org/aircraft/N531AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35199
- Aircraft time: 21,381 hours, 6,477 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Button
- Part number: 1741010201
- Part serial: 007639
- Condition: Inoperative
- Location: Cdu
- Part time: 21,208 hours, 6,414 cycles
- 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/ASAA2015102513529

## Discrepancy

EXECUTE BUTTON ON RT MCDU ALMOST INOP AS VERY HARD TO EXECUTE.  ACFT GROUNDED. R & R FMCS CDU REF AMM 34-61-01.  GROUND FUNCTION CHECK COMPLIED WITH.

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