# SDR ASAA2021081135680

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 11, 2021
- Submitted: August 13, 2021
- Operation: Air carrier
- Aircraft: [N919AK](https://openairdocs.org/aircraft/N919AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44087
- Aircraft time: 797 hours, 376 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Display
- Condition: Faulted
- Location: Cockpit
- Stage of operation: DE
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021081135680

## Discrepancy

DURING DESCENT WIND FORECAST UPLOAD, BOTH CAPT & FO ND'S WENT BLANK VDK ANNUNCIATED ON CAPT. ND BOTH MCDU'S WENT BLANK. AFTER APPROXIMATELY 30 SECONDS EVERYTHING RESTORED TO NORMAL. GROUNDED - YES. FOUND MAINT MSG 34-69001, UNDER GRND FLT DECK EFFECTS, NO MAINT LIGHT. ACCOMP FMC OP'S CK, REF B737-9 AMM 34-61-00-710-801 & MAX DISPLAY OP'S CK REF AMM 31-65-11-400-801 'H', NO DEFECTS FOUND. A/C OK FOR SVC.

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