# SDR ASAA2014072208645

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 22, 2014
- Submitted: July 24, 2014
- Operation: Air carrier
- Aircraft: [N408AS](https://openairdocs.org/aircraft/N408AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41732
- Aircraft time: 6,449 hours, 2,041 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Malfunctioned
- 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/ASAA2014072208645

## Discrepancy

TEMPORARY DUAL FMC FAILURE DURING DESCENT. VTK AND MAP FAILURE FLAGS ON BOTH DISPLAYS, BOTH FMC'S FAILED.  NORMAL OPS RETURNED AFTER ABOUT ONE MINUTE.  NOTE: FAILURE DID NOT OCCUR IN ETOPS AIRSPACE.  ACFT GROUNDED. PERFORMED FIM 34-61 TASK 801. FMC SENSOR STATUS SHOWS NO LT & RT FAULTS.  INFLT SHOWS FAULTS ON FMC LT & RT FLT LEG 1 PERFORMED FIM 34-61, TASK 807.  BOTH FMC'S GROUND VERIFICATION NORMAL.

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