# SDR U2RA2022100400050

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 2, 2022
- Submitted: October 4, 2022
- Operation: Air carrier
- Aircraft: [N756CA](https://openairdocs.org/aircraft/N756CA), registered now
- Make and model: Boeing 747
- Aircraft serial: 26547
- Aircraft time: 89,096 hours, 14,489 cycles
- System (JASC): [5220 · Emergency Exits](https://openairdocs.org/jasc/5220)
- Part: Power Supply
- Part number: 90084
- Part serial: 3938
- Condition: Inoperative
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/U2RA2022100400050

## Discrepancy

RIGHT UPPER DECK DOOR BATTERY INOPERATIVE.  REMOVED AND REPLACED THE BATTERY POWER SUPPLY AND SWITCH MODULE PER AIRCRAFT MAINTENANCE MANUAL 52-23-14.

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