# SDR UALA2012051602767

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2012
- Submitted: July 26, 2012
- Operation: Air carrier
- Aircraft: [N777UA](https://openairdocs.org/aircraft/N777UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26916
- Aircraft time: 68,878 hours, 12,486 cycles
- Engine: Pwa PW4077
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71702001
- Condition: Inoperative
- Location: Emergency Light
- 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/UALA2012051602767

## Discrepancy

EXTERIOR EMERGENCY LIGHT AT DOOR 1LH IS OUT.  REPLACED BATTERY PACK POWER SUPPLY, M33424.  OPS CHECKED GOOD.

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