# SDR UIEA2024101100986

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 12, 2024
- Submitted: October 15, 2024
- Operation: Air carrier
- Aircraft: [N419MC](https://openairdocs.org/aircraft/N419MC), registered now
- Make and model: Boeing 747-48EF
- Registry model: [Boeing 747-48EF](https://openairdocs.org/model/boeing-747-48ef) (OpenAirDocs)
- Aircraft serial: 28367
- Aircraft time: 115,205 hours, 19,997 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 20131ASMI
- Part serial: AAI126937
- Condition: Inoperative
- 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/UIEA2024101100986

## Discrepancy

FOUND EMERGENCY LIGHT INOP IN MAIN DECK AND L1 ENTRY DOOR AREA.(<P>I.A.W AMM 33-51-04-902-001-001 REV 110 REPLACED M5170 BATTERY ASSY AND PERFORMED PWER SUPPLY TEST. THE RESULT WAS SATISFACTORY.</P>)

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