# SDR KCSA2019031402

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 14, 2019
- Submitted: March 19, 2019
- Operation: Air carrier
- Aircraft: [N708CK](https://openairdocs.org/aircraft/N708CK), registered now
- Make and model: Boeing 747-4B5
- Registry model: [Boeing 747-4B5](https://openairdocs.org/model/boeing-747-4b5) (OpenAirDocs)
- Aircraft serial: 25275
- Aircraft time: 92,200 hours, 15,916 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Lock Actuator
- Part number: 723D1009
- Part serial: 1220
- Condition: Failed
- Location: Zone 800
- Stage of operation: UK
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KCSA2019031402

## Discrepancy

DOOR UPPER DECK FLIGHT LOCK. REMOVED AND REPLACED LEFT UPPER DECK DOOR FLIGHT LOCK IAW BAMM 52-23-08 - OPS CHECK GOOD.

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