# SDR ASAA2022120841060

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 8, 2022
- Submitted: December 12, 2022
- Operation: Air carrier
- Aircraft: [N534AS](https://openairdocs.org/aircraft/N534AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35202
- Aircraft time: 44,130 hours, 12,613 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Warning Light
- 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/ASAA2022120841060

## Discrepancy

IN CRUISE FLIGHT LEVEL AT FL370 MACH.77 VTK DISPLAYED ON FO ND SINGLE FMC OPERATION ON SCRATCHPAD. GROUNDED - YES.  REMOVED & REPLACED FMCS #2 AND PERFORMED GOOD INSTALLATION TEST AMM 34-61-02/401.

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