# SDR IPXA2023090530497

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 4, 2023
- Submitted: September 5, 2023
- Operation: Air carrier
- Aircraft: [N577UP](https://openairdocs.org/aircraft/N577UP), registered now
- Make and model: Boeing 747-44AF
- Registry model: [Boeing 747-44AF](https://openairdocs.org/model/boeing-747-44af) (OpenAirDocs)
- Aircraft serial: 35666
- Aircraft time: 54,730 hours, 8,453 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Charger
- Part number: 20121
- Part serial: BN104932
- Condition: Inoperative
- Location: Unknown
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2023090530497

## Discrepancy

EMERGENCY EXIT SIGN NOT ILLUMINATE AT JUST BIHIND OF  FLT DECK ENTRANCE. REPLACED M5169 EMERGENCY LIGHT POWER SUPPLY & EMER LIGHT BATTERY IAW AMM 33-51-04/201. EMERGENCY LIGHT OPERATION CHECK OK IAW AMM 33-51-00/501

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