# SDR NWAA093165806

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 8, 2009
- Submitted: September 10, 2009
- Operation: Air carrier
- Aircraft: [N586NW](https://openairdocs.org/aircraft/N586NW), registered now
- Make and model: Boeing 757351
- Aircraft serial: 32987
- Aircraft time: 25,638 hours, 8,195 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Failed
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NWAA093165806

## Discrepancy

DURING THE ANNUAL DEEP CYCLE CHECK OF THE EMERGENCY LIGHT BATTERY PACKS THE BATTERY PACK THAT PROVIDES POWER FOR THE EMERGENCY LIGHTS AT DOOR 4R FAILED THE CHECK OUT.  MAINTENANCE REPLACED THE BATTERY PACK AND THE SYSTEM PASSED THE CHECK OUT.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.