# SDR UIEA2023022300176

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 28, 2023
- Submitted: March 2, 2023
- Operation: Air carrier
- Aircraft: [N404KZ](https://openairdocs.org/aircraft/N404KZ), registered now
- Make and model: Boeing 747481F
- Aircraft serial: 34283
- Aircraft time: 58,346 hours, 11,405 cycles
- System (JASC): [3300 · Lighting System](https://openairdocs.org/jasc/3300)
- Part: Power Supply
- Part number: BPS73
- Part serial: 55553
- Condition: None
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2023022300176

## Discrepancy

M5169 EMER LT BATTERY PACK CAPACITY TEST FAILED(<P>M5169 EMER LT POWER SUPPLY REPLACED AND INSTALLATION TEST NORMAL IAW AMM 33-51-04 REV 106, 15 NOV 2022</P>)

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