# SDR AALA202104059028

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 2, 2021
- Submitted: April 5, 2021
- Operation: Air carrier
- Aircraft: [N761AJ](https://openairdocs.org/aircraft/N761AJ), registered now
- Make and model: Boeing 777223
- Aircraft serial: 31478
- Aircraft time: 71,929 hours, 8,848 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- 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/AALA202104059028

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: EXIT LIGHT AND EMERGENCY LIGHT DOOR 4L INOPERATIVE. REMOVED AND REPLACED DOOR 4L POWER SUPPLY BATTERY PACK IAW AMM 33-51-06.

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