# SDR CALA2026050515985

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 1, 2026
- Submitted: May 5, 2026
- Operation: Air carrier
- Aircraft: [N2644U](https://openairdocs.org/aircraft/N2644U), registered now
- Make and model: Boeing 777-300ER
- Registry model: [Boeing 777-300ER](https://openairdocs.org/model/boeing-777-300er) (OpenAirDocs)
- Aircraft serial: 63724
- Aircraft time: 38,193 hours, 4,093 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: D71701100
- Condition: Faulty
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026050515985

## Discrepancy

DR 2R M22098 EMER LT BATTERY CAPACITY CHECK FAIL.  EMERGENCY LT BATTERY CAPACITY CHECK FAIL, BATTERY REPLACED AND CHECK NORMAL AS PER AMM 33-51-06,  DR 2R EMER LT BATTERY REPLACED AS PER AMM 33-51-06.

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