# SDR DALA2016102507496

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 23, 2016
- Submitted: October 25, 2016
- Operation: Air carrier
- Aircraft: N1501P
- Make and model: Boeing 767-3P6
- Registry model: [Boeing 767-3P6](https://openairdocs.org/model/boeing-767-3p6) (OpenAirDocs)
- Aircraft serial: 24983
- Aircraft time: 110,744 hours, 20,952 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Failed
- Location: Cockpit
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2016102507496

## Discrepancy

FLIGHT CREW DIVERTED TO HND DUE TO THE LOSS OF BOTH FMC'S.  AS CREW WAS RUNNING THE QRH, THE RIGHT FMC FAILED.  AIRCRAFT LOST AUTOPILOT, AND ALL LNAV/VNAV FUNCTIONS.  CREW PULLED, RESET CBS AND ATTEMPTED CONTACT WITH MCC VIA SATCOM, DECISION TO DIVERT TO HND.  EMERGENCY DECLARED WITH ATC.  CREW REPORTED THAT R FMC HAD RETURNED TO OPERATION 10-15 MINUTES AFTER CB RESET.  REPLACED THE L FMC AND CROSS LOADED NAV DATA BASE AND VERIFIED SOFTWARE PER AMM 34-61.

---
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.