# SDR KCSA20250528428

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 24, 2025
- Submitted: May 28, 2025
- Operation: Air carrier
- Aircraft: [N745CK](https://openairdocs.org/aircraft/N745CK), registered now
- Make and model: Boeing 747446
- Aircraft serial: 26361
- Aircraft time: 100,449 hours, 14,878 cycles
- System (JASC): [5250 · Fixed Inner Doors](https://openairdocs.org/jasc/5250)
- Part: Warning Message
- Condition: False Activation
- Location: Zone 800
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KCSA20250528428

## Discrepancy

DOOR UPPER DECK FLIGHT LOCK CAUTION MESSAGE. BOTH UPPER DECK DOOR FLIGHT LOCK ACTUATORS OPERATIONS CHECK NORMAL IAW B747-400 AMM 52-23-00.

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