# SDR DALA2021052302850

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 23, 2021
- Submitted: May 23, 2021
- Operation: Air carrier
- Aircraft: [N557NW](https://openairdocs.org/aircraft/N557NW), registered now
- Make and model: Boeing 757251
- Aircraft serial: 33393
- Aircraft time: 54,420 hours, 23,651 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Inoperative
- Location: Emergency Lights
- 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/DALA2021052302850

## Discrepancy

SHIP 5657 EMERGENCY LIGHTS AT ROW 18,21,23 ARE INOPERATIVE. CORRECTIVE ACTION: REPLACED ROW 1B SEAT MOUNTED EMERGENCY LIGHT AND BATTERY PACK APPLICABLE TO ROS 21 & 23 CELING LIGHTS. SYSTEM OPERATION IS NORMAL. (LP 7772128)

---
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.