# SDR ASAA0956394

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 11, 2009
- Submitted: August 13, 2009
- Operation: Air carrier
- Aircraft: [N583AS](https://openairdocs.org/aircraft/N583AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35681
- Aircraft time: 7,997 hours, 2,396 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Part number: 1762000101
- Part serial: 003128
- Condition: Malfunctioned
- Location: E&E Bay
- Part time: 7,997 hours, 2,396 cycles
- Stage of operation: CR
- 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/ASAA0956394

## Discrepancy

LEFT FMC FAILED AT CRUISE.  APPLIED LEFT FMC FAIL CHECKLIST.  UNABLE TO RESTORE DUAL OPERATIONS.  KNOWN SOFTWARE FAULT.  PULLED NR 1 FMCS CMPTR & MCDU C/B'S FOR 30 SECS & RESET.  OPS CHECK NR 1 FMCS GOOD.  REF MM 34 61 02/101. MCF INFORMED.

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