# SDR CALA2023031300729

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2023
- Submitted: March 13, 2023
- Operation: Air carrier
- Aircraft: [N2135U](https://openairdocs.org/aircraft/N2135U), registered now
- Make and model: Boeing 777-300ER
- Registry model: [Boeing 777-300ER](https://openairdocs.org/model/boeing-777-300er) (OpenAirDocs)
- Aircraft serial: 62646
- Aircraft time: 24,413 hours, 2,729 cycles
- System (JASC): [3300 · Lighting System](https://openairdocs.org/jasc/3300)
- Part: Battery Pack
- Part number: D71701100
- Condition: No Test
- Location: Dr 4r (M33404)
- Stage of operation: IN
- How discovered: O
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023031300729

## Discrepancy

EMERGENCY LIGHT POWER SUPPLY BATTERY PACK AT DOOR 4R FAILED OPER ATIONAL CHECK. REF SIAEC N/R ELE0069 POWER SUPPLY BATTERY PACK AT DOOR 4R (M33404) REPLACED AND TESTE D STIAFACTORY AS PER AMM 33-51-06. WPB L3035, REF SIAEC N/R ELE0069

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