# SDR ASAA2023063043842

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 2023
- Submitted: July 3, 2023
- Operation: Air carrier
- Aircraft: [N938AK](https://openairdocs.org/aircraft/N938AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43381
- Aircraft time: 4,063 hours, 1,152 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: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023063043842

## Discrepancy

CPDLC WILL NOT ACCEPT CONFIRMATION MESSAGE RESULTING IN "OPEN" ATC MESSAGE. WORKED ON THE GROUND WHEN ACCEPTING PRE DEPARTURE CLEARANCE. AFTER ATTEMPTING TO RE-LOGIN, IT TOOK APPROXIMATELY 10 MINS FOR ATC TO ACCEPT LOGIN. GROUNDED - YES. RESET CPDLC SYS PER B737-9 AMM 34-61-00-800-899 PERFORMED FUNCTIOAL TEST OF CPDLC SYS PER B737-9 AMM 34-61-00-720-899 TEST OK.

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