# SDR KCSA2023051230

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 12, 2023
- Submitted: July 25, 2023
- Operation: Air carrier
- Aircraft: [N703CK](https://openairdocs.org/aircraft/N703CK), registered now
- Make and model: Boeing 747412
- Aircraft serial: 24226
- Aircraft time: 9,585 hours, 20,166 cycles
- System (JASC): [5200 · Doors](https://openairdocs.org/jasc/5200)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: UK
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KCSA2023051230

## Discrepancy

DOOR UPPER DECK FLIGHT LOCK. PERFORMED UPPER DECK OPERATIONS CHECK IAW KA B747-400 AMM 52-23-00/501. OPERATIONS CHECK GOOD.

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