# SDR KCSA201600904

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 9, 2016
- Submitted: October 20, 2016
- Operation: Air carrier
- Aircraft: [N744CK](https://openairdocs.org/aircraft/N744CK), registered now
- Make and model: Boeing 747446
- Aircraft serial: 26353
- Aircraft time: 90,818 hours, 17,204 cycles
- System (JASC): [5250 · Fixed Inner Doors](https://openairdocs.org/jasc/5250)
- Part: Actuator
- Part number: 723D1009
- Part serial: 1045
- Condition: Malfunctioned
- Location: Door Lock
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KCSA201600904

## Discrepancy

DOOR UPPER DECK FLIGHT LOCK MALFUNCTIONED.  REMOVED AND REPLACED FLIGHT LOCK ACTUATOR AND OPS CHECKED GOOD IAW MM 52-23-08.

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