# SDR ASAA2022033137871

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 31, 2022
- Submitted: April 5, 2022
- Operation: Air carrier
- Aircraft: [N440AS](https://openairdocs.org/aircraft/N440AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41705
- Aircraft time: 31,532 hours, 10,051 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022033137871

## Discrepancy

APPROX HALF WAY THROUGH THE FLIGHT THE FMC HAD AN ANOMALY THAT RESEMBLED A DUAL FMC FAILURE TO INCLUDE DUAL VTK AND DUAL MENU PAGE PRESENTATION ANOMALY LASTED FOR LESS THAN 2 MINUTES BEFORE RETURNING TO NORMAL OPERATIONS. GROUNDED - YES. PERFORMED B737-900 FIM 34-61TASK 836 CYCLED FMC COMPUTER 1&2 CIRCUT BREAKERS VERIFIED NO FLAGS PRESENT

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