# SDR KCSA2023120551

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2023
- Submitted: December 7, 2023
- Operation: Air carrier
- Aircraft: [N743CK](https://openairdocs.org/aircraft/N743CK), registered now
- Make and model: Boeing 747446
- Aircraft serial: 26350
- Aircraft time: 119,035 hours, 18,906 cycles
- System (JASC): [5250 · Fixed Inner Doors](https://openairdocs.org/jasc/5250)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: CL
- 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/KCSA2023120551

## Discrepancy

DOOR UPPER DECK FLIGHT LOCK. TROUBLE SHOT IAW B747-400 FIM 52-71 TASK 823 UP TO STEP B (1) (B) NO DEFECTS NOTED AT THIS TIME PERFORMED OPERATIONAL TEST IAW B747-400 52-23-00 TEST GOOD AT THIS TIME OK FOR CONTINUE SERVICE.

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