# SDR DALA1161935642

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 5, 2011
- Submitted: November 7, 2011
- Operation: Air carrier
- Aircraft: [N542US](https://openairdocs.org/aircraft/N542US), registered now
- Make and model: Boeing 757251
- Aircraft serial: 26489
- Aircraft time: 4,158 hours, 1,362 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Discharged
- Location: Cabin
- 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/DALA1161935642

## Discrepancy

DURING A ROUTINE LINE MAINTENANCE INSPECTION THE EXTERIOR EMERGENCY LIGHT LOCATED NEAR THE AFT CARGO DOOR WAS FOUND TO BE INOPERATIVE.  BATTERY PACK WAS FOUND TO BE INOPERATIVE.  REPLACED BATTERY PACK PER 757 AMM 33-51-07.  AFTER BATTERY PACK REPLACEMENT LIGHT OPERATION WAS NORMAL.

---
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.