# SDR IPXA2023041761577

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 2023
- Submitted: April 17, 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: 53,392 hours, 8,219 cycles
- System (JASC): [3300 · Lighting System](https://openairdocs.org/jasc/3300)
- Part: Light
- Part number: 20131A
- Part serial: 103614
- Condition: Inoperative
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2023041761577

## Discrepancy

5X EMERGENCY LIGHTS ON UPPER DECK CEILING INOP UPPER DECK BATTERY ASSY REPLACED IAW AMM 33-51-04-201 REV 107.00. OPS TEST SATIS

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