# SDR UIEA2016051600289

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 2016
- Submitted: May 16, 2016
- Operation: Air carrier
- Aircraft: [N322SG](https://openairdocs.org/aircraft/N322SG), registered now
- Make and model: Boeing 747481
- Aircraft serial: 30322
- Aircraft time: 42,368 hours, 5,631,232 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 900835AB
- Part serial: 105170
- Condition: Discharged
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2016051600289

## Discrepancy

DURING UPPER DECK DOOR EMER SYS OPERATION, FOUND BOTH UPPER DECK BATTERY OK LIGHT NOT ON.  IAW WDM 52-21-13, 52-21-23 REV 40, PFM WIRING CONTINUITY CHECK FROM BATTERY MODULE TO UPPER DECK DOOR MODULE, RESULT WAS SATISFACTORY.  IAW AMM 52-23-14-004-001 & 52-23-14-404-005 REV 86, REPLACED BOTH UPPER DECK DOOR BATTERY PACK & INSTALLATION TEST, RESULT WAS SATISFACTORY.

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