# SDR UIEA2023071000754

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 5, 2023
- Submitted: July 10, 2023
- Operation: Air carrier
- Aircraft: [N445MC](https://openairdocs.org/aircraft/N445MC), registered now
- Make and model: Boeing 747-4B5F
- Registry model: [Boeing 747-4B5F](https://openairdocs.org/model/boeing-747-4b5f) (OpenAirDocs)
- Aircraft serial: 33515
- Aircraft time: 84,103 hours, 14,127 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Charger
- Part number: 20121
- Part serial: 52321
- Condition: Unknown
- Location: Unknown
- 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/UIEA2023071000754

## Discrepancy

FOUND EMERGENCY LIGHT BATTERY PACK (MJ120) FUNCTION FAIL.(<P>1. IAW AMM 33-51-04-002-009-001 & 33-51-04-402-012-001 REV.107. REPLACED POWER SUPPLY (MJ170). 2. IAW AMM 33-51-04-402-012-001 REV 107. PERFORMED EMERGENCY LIGHT POWER. SUPPLY INSTALLATION TEST AND THE RESULT WAS SATISFACTORY. </P>)

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