# SDR ASAA2021012133930

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2021
- Submitted: January 26, 2021
- Operation: Air carrier
- Aircraft: [N596AS](https://openairdocs.org/aircraft/N596AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35688
- Aircraft time: 46,099 hours, 13,786 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Failed
- Location: First Officer'S
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021012133930

## Discrepancy

ON DESCENT FO'S FMC FAILED.  VTRK ON FO'S MFD.  FMC DISAGREE.  UNABLE REQ'D NAV PERFORMED RNP.  FMC DISAGREE REMAINED ON FOR LAST 10-20 MIN OF TAXI.  GROUNDED-YES.  RAN B737-800 FIM 34-61-TASK 836.  CYCLED POWER BOTH FMC'S.  OPERATIONS RESTORED AND CHECK OKAY, REF SAME.

---
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.