# SDR ASAA2022011037127

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 10, 2022
- Submitted: January 15, 2022
- Operation: Air carrier
- Aircraft: [N461AS](https://openairdocs.org/aircraft/N461AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36363
- Aircraft time: 29,186 hours, 9,213 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Display
- Part number: 1741010303
- Part serial: 003046
- Condition: Faulty
- Location: Flight Deck
- Part time: 29,189 hours, 9,213 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022011037127

## Discrepancy

FMC P/RST BUTTON LIGHT WILL NOT RESET. GROUNDED - YES. PERFORMED FMC COMPUTER SYSTEM BITE PROCEDURE REF B737-900 FIM 34-61 TASK 801. FOUND FMC L DETECTED A FAULT FOR THE RIGHT CDU. REMOVED AND REPLACED MCDU IAW B737-900 AMM 34-61-01/401 OPS CHECK GOOD SOFTWARE PN CHECKS GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.