# SDR UIEA2019050304109

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 3, 2019
- Submitted: May 3, 2019
- Operation: Air carrier
- Aircraft: [N263SG](https://openairdocs.org/aircraft/N263SG), registered now
- Make and model: Boeing 747481
- Aircraft serial: 29263
- Aircraft time: 52,356 hours, 6,412 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 20131A
- Part serial: 75332
- Condition: Failed
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2019050304109

## Discrepancy

FOUND EMERGENCY LIGHT BATTERY PACK DEEP CYCLE FAIL AT M7915, M7919, M7920, M7922, AND M7924.(<P>REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACKS AT M7915, M7919, M7920, M7922, AND M7924 IAW AMM 33-51-04-902-001-001 REV. 95. PERFORMED POWER SUPPLY TEST AND THE RESULT WAS SATISFACTORY IAW AMM 33-51-04-902-001-001 REV.95 STEP E.</P><P><BR DATA-MCE-BOGUS="1" /></P><P>S/N(S) OFF: 35284, 90174, 106267, 102043</P>)

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