# SDR DALA2025092106897

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 20, 2025
- Submitted: September 21, 2025
- Operation: Air carrier
- Aircraft: [N556NW](https://openairdocs.org/aircraft/N556NW), registered now
- Make and model: Boeing 757251
- Aircraft serial: 33392
- Aircraft time: 62,367 hours, 28,639 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- 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/DALA2025092106897

## Discrepancy

FOUND ENTRANCE DOOR EXIT SIGN LIGHT INOP.   REPLACED BATTERY PACK REF. B757 AMM 33-51. (LP 7275678)

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