# SDR UIEA2023030900235

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 2023
- Submitted: March 10, 2023
- Operation: Air carrier
- Aircraft: [N476MC](https://openairdocs.org/aircraft/N476MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29256
- Aircraft time: 93,201 hours, 17,179 cycles
- System (JASC): [3300 · Lighting System](https://openairdocs.org/jasc/3300)
- Part: Battery
- Part number: 201314
- Part serial: AAI96787
- Condition: None
- 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/UIEA2023030900235

## Discrepancy

FOUND EMERGENCY BATTERY (M5169) FUNCTION FAIL(<P>1. IAW AMM 33-51-04-902-001-001 REV107 REPLACED EMEREGENCY LIGHT POWER SUPPLY (M5169) BATTERY 2. IAW AMM 33-51-04-902-001-001 REV 107 PERFORMED POWER SUPPLY BATTERY INSTALLATION TEST AND THE RESULT WAS SATISFACTORY.</P>)

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