# SDR CALA2026101620422

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 15, 2026
- Submitted: October 16, 2026
- Operation: Air carrier
- Aircraft: [N222UA](https://openairdocs.org/aircraft/N222UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30553
- Aircraft time: 93,136 hours, 12,505 cycles
- Engine: Pwa PW4090
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- 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/CALA2026101620422

## Discrepancy

SUPPORT TASK - L4 DOOR EMER LIGHT POWER SUPPLY M33407 TEST FAILED. TRANSFER NON-ROUTINE HX WO.7336103 AND ORIGINATED BY V943251 DOOR 4L M33407 EMERGENCY LIGHT BATTERY TEST FAILED AND BATTERY REPLACED DR 4L M33407 EMER LT PWR SUPPLY BATT REPLACED AND TESTED NORMAL AS PER AMM33-51-06. WORK ACCOMPLISHED BY V898181 AND INSPECTED BY V898173.

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