# SDR CALA2026021613810

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 13, 2026
- Submitted: February 16, 2026
- Operation: Air carrier
- Aircraft: [N2639U](https://openairdocs.org/aircraft/N2639U), registered now
- Make and model: Boeing 777-300ER
- Registry model: [Boeing 777-300ER](https://openairdocs.org/model/boeing-777-300er) (OpenAirDocs)
- Aircraft serial: 62650
- Aircraft time: 37,657 hours, 4,130 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71701100
- 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/CALA2026021613810

## Discrepancy

THE EMERGENCY LIGHT POWER SUPPLY BATTERY PACK(M33303) AT THE DOOR 3L FOUND LOW CAPACITY.   REPLACED THE EMERGENCY LIGHT POWER SUPPLY BATTERY PACK(M33303) AT THE DOOR 3L AND CARRIED OUT TEST THE RESULT WAS NORMAL REF AMM 33-51-06-960-802 REV 106.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.