# SDR KCSA202408053020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 2024
- Submitted: August 5, 2024
- Operation: Air carrier
- Aircraft: [N741CK](https://openairdocs.org/aircraft/N741CK), registered now
- Make and model: Boeing 747-4H6
- Registry model: [Boeing 747-4H6](https://openairdocs.org/model/boeing-747-4h6) (OpenAirDocs)
- Aircraft serial: 24315
- Aircraft time: 102,515 hours, 17,524 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 900835AB
- Part serial: 104628
- Condition: Unserviceable
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KCSA202408053020

## Discrepancy

100170844 LEFT UPPER DECK DOOR EMERGENCY LIGHT INOPERABLE. REMOVED AND REPLACED POWER SUPPLY BATTERY AND OPERATIONAL CHECK GOOD IAW B747-400 AMM 33-51-04.

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