# SDR DALA1203105521

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 22, 2012
- Submitted: January 23, 2012
- Operation: Air carrier
- Aircraft: N521US
- Make and model: Boeing 757251
- Aircraft serial: 23209
- Aircraft time: 4,315 hours, 2,425 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/DALA1203105521

## Discrepancy

DURING LINE CHECK MAINTENANCE FOUND AFT SECTION EMERGENCY EXIT LIGHTING & 4L-4R DOOR EXIT INOP.  MAINTENANCE REPLACED BATTERY PACK PER AMM 33-51.  LIGHTS NOW CHECK OK.

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