# SDR AALA202601213189

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 17, 2026
- Submitted: January 21, 2026
- Operation: Air carrier
- Aircraft: [N766AN](https://openairdocs.org/aircraft/N766AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 32880
- Aircraft time: 87,399 hours, 11,103 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71702001
- Condition: No Test
- Location: Zone 200
- 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/AALA202601213189

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE,  EMERGENCY LIGHTS ASSOCIATED WITH BATTERY PACK M33407 FAILED 72C20033010 FUNCTIONAL CHECK.   EMERGENCY LIGHT BATTERY PACK. OPS CHECK REQUIRED AFTER BATTERIES ARE FULLY CHARGED. OPS CHECK GOOD IAW AMM 33-51-06.

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