# SDR CALA2013100891828

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 7, 2013
- Submitted: November 1, 2013
- Operation: Air carrier
- Aircraft: N127UA
- Make and model: Boeing 747422
- Aircraft serial: 28813
- Aircraft time: 56,281 hours, 6,537 cycles
- Engine: Pwa PW4056
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 582240
- Condition: Inoperative
- Location: Emergency Lights
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2013100891828

## Discrepancy

EMERGENCY LIGHT INOPERATIVE AT 4L AFT SIDE & 4R FWD SIDE.  BATTERY PACK REPLACED & OPERATIONS CHECKED NORMAL IAW AMM.

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