# SDR CALA2026020213516

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 3, 2026
- Submitted: February 3, 2026
- Operation: Air carrier
- Aircraft: [N768UA](https://openairdocs.org/aircraft/N768UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26919
- Aircraft time: 107,417 hours, 20,189 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- 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/CALA2026020213516

## Discrepancy

EMERGENCY LIGHTS FOR DOOR L4 & AREA LIGHTS SEAT ROW 42 TO 50 LT SIDE, DID NOT ILLUMINATE DURING EMERGENCY LIGHT TEST. FOUND BATTERY PACK FOR EMERGENCY POWER SUPPLY M33407 ON OVER DOOR PANEL L4 DEGRADED. REPLACED THE BATTERY PACK. OP CHECKED GOOD IAW AMM 33-51-06-960-802.

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