# SDR ASAA2012100493019

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 4, 2012
- Submitted: October 9, 2012
- Operation: Air carrier
- Aircraft: [N517AS](https://openairdocs.org/aircraft/N517AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35197
- Aircraft time: 14,458 hours, 4,467 cycles
- Engine: Cfmint CFM567B273
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Warning Message
- Condition: False Activation
- Location: Fmc
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2012100493019

## Discrepancy

RECEIVED SINGLE FMC OPERATION WITH MAP INDICATED ON RT NAV DISPLAY. ACCOMPLISHED QRH PROCEDURES BUT NEVER GOT DUAL FMC OP RESTORED MSG. SUSPECT RT FMC FAILURE.  ACFT GROUNDED. CHECKED FMC COMPUTER, NO CURRENT  FAULTS STORED, NO FAULT LIGHT ON FRONT OF COMPUTER.  RAN DFCS LRU REPLACEMENT TEST FOR FMC, TEST PASS.  ACCOMPLISHED FMC OPS TEST, TEST PASS, REF MM 34-61-00. GROUND VERIFICATION SATISFACTORY.

---
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.