# SDR IPXA2017070518937

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 5, 2017
- Submitted: July 5, 2017
- Operation: Air carrier
- Aircraft: [N573UP](https://openairdocs.org/aircraft/N573UP), registered now
- Make and model: Boeing 747-44AF
- Registry model: [Boeing 747-44AF](https://openairdocs.org/model/boeing-747-44af) (OpenAirDocs)
- Aircraft serial: 35662
- Aircraft time: 34,903 hours, 5,416 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 20131A
- Part serial: 100382
- Condition: Inoperative
- Location: Emergency Lights
- 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/IPXA2017070518937

## Discrepancy

UPPER DECK EMERGENCY LIGHTS L1533, L5733, L5767, AND M4915 INOPERATIVE.   REPLACED THE EMERGENCY LIGHT BATTERY (M5169 )IAW AMM 33-51-04-902-001-001, REV 89.01, AND PERFORMED AN EMERGENCY LIGHT TEST, RESULTS WERE SATISFACTORY.

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