# SDR KCSA20250318406

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 14, 2025
- Submitted: March 18, 2025
- Operation: Air carrier
- Aircraft: [N745CK](https://openairdocs.org/aircraft/N745CK), registered now
- Make and model: Boeing 747446
- Aircraft serial: 26361
- Aircraft time: 99,870 hours, 14,784 cycles
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Warning System
- Condition: Multiple Ind
- Stage of operation: CL
- How discovered: O
- Nature of condition: G, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KCSA20250318406

## Discrepancy

100200133: DOOR UPPER DECK FLIGHT LOCK ENGINE INDICATING & CREW ALERTING SYSTEM. TROUBLESHOT IAW FAULT ISOLATION MANUAL 52-71 TASK 823 BOTH FLIGHT LOCK ACTUATORS OPERATIONS CHECKS NORMAL IAW AMM 52-23-00.

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