# SDR ASAA2021121536906

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 15, 2021
- Submitted: December 21, 2021
- Operation: Air carrier
- Aircraft: [N459AS](https://openairdocs.org/aircraft/N459AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36352
- Aircraft time: 28,957 hours, 9,237 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: None
- Part number: 1741010303
- Part serial: 003114
- Condition: Inoperative
- Location: Flight Deck
- Part time: 28,963 hours, 9,235 cycles
- Stage of operation: NR
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021121536906

## Discrepancy

FLIGHT CREW REPORTS #2 MCDU BLANK. GROUNDED - YES. REMOVED & REPLACED #2 FMC MCDU REF B737-900 AMM 34-61-01 & OPS CKS GOOD. GROUND VERIFICATION CK PASSED.

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