# SDR UIEA2025061600777

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 14, 2025
- Submitted: June 16, 2025
- Operation: Air carrier
- Aircraft: [N322SG](https://openairdocs.org/aircraft/N322SG), registered now
- Make and model: Boeing 747481
- Aircraft serial: 30322
- Aircraft time: 47,174 hours, 6,501 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 20131A
- Part serial: 69364
- Condition: No Test
- Location: Zone 200
- 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/UIEA2025061600777

## Discrepancy

FOUND U/D EMERGENCY LIGHT POWER SUPPLY (M5933) FUNCTION FAIL.(<P>1. REPLACED EMERGENCY LIGHT POWER SUPPLY (M5933) IAW AMM 33-51-04-002-009-001 & AMM 33-51-04-402-012-001 REV 113. 2. REPLACED EMERGENCY POWER SUPPLY BATTERY (M5933) IAW AMM 33-51-04-902-001-001 REV 113. 3. PERFORMED EMERGENCY LIGHT POWER SUPPLY & BATTERY INSTALLATION TEST IAW AMM 33-51-04-405-012-001 & AMM 33-51-04-902-001-001 REV 113. THE TEST RESULT WAS SATISFACTORY. OFF: BATTERY PN 2013-1A SN 69364 & BATTERY CHARGER PN 2012-1 SN 49789.</P>)

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