# SDR CALA2026020213479

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 30, 2026
- Submitted: February 2, 2026
- Operation: Air carrier
- Aircraft: [N217UA](https://openairdocs.org/aircraft/N217UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30550
- Aircraft time: 97,024 hours, 11,517 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: ADD71701100
- Condition: Discharged
- 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/CALA2026020213479

## Discrepancy

L4 DOOR M33407 BATTERY PACK FOUND INOP.  L4 DOOR M33407 BATTERY PACK FOUND INOP. REPLACED BATTERY AND TEST NORMAL.  REPLACED L4 DOOR EMERGENCY LIGHT POWER SUPPLY M33407 BATTERY PACK AND PERFORMED NEW BATTERY INSTALLATION TEST, THE TEST RESULT FOUND NORMAL AS PER AMM 33-51-06-960-802 REV 106.

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