# SDR CALA2025111111107

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 9, 2025
- Submitted: November 11, 2025
- Operation: Air carrier
- Aircraft: [N2352U](https://openairdocs.org/aircraft/N2352U), registered now
- Make and model: Boeing 777-300ER
- Registry model: [Boeing 777-300ER](https://openairdocs.org/model/boeing-777-300er) (OpenAirDocs)
- Aircraft serial: 66592
- Aircraft time: 24,821 hours, 2,960 cycles
- System (JASC): [2560 · Emergency Equipment](https://openairdocs.org/jasc/2560)
- Part: Battery
- Part number: 285W0955102
- Part serial: F13080
- Condition: Inoperative
- Location: Zone 800 Epas
- Part time: 26,124 hours, 3,001 cycles
- 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/CALA2025111111107

## Discrepancy

DOOR 4R EPAS BATTERY GREEN TEST LIGHT NOT ILLUMINATED/BLINKING. REMOVED DOOR 4R EPAS BATTERY PACK REF AMM 52-12-20-000-803-002. REPLACED DOOR 4R BATTERY PACK MODULE REF AMM 52-12-20-400-802-002. EPAS BATTERY OPS TEST GOOD, GREEN TEST LIGHT ILLUMINATED/BLINKING.

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