# SDR ERKR0310032326416

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 10, 2023
- Submitted: March 11, 2023
- Operation: Air carrier
- Filed by: [Marana Aerospace Solutions Inc, repair station ERKR675D](https://openairdocs.org/faa-repair-station/ERKR675D/marana-aerospace-solutions-inc.md) (OpenAirDocs)
- Aircraft: [N701CK](https://openairdocs.org/aircraft/N701CK), registered now
- Make and model: Boeing 747-4B5F
- Registry model: [Boeing 747-4B5F](https://openairdocs.org/model/boeing-747-4b5f) (OpenAirDocs)
- Aircraft serial: 26416
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: None
- Condition: None
- Component: Battery Pack
- Component part number: 20131A
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ERKR0310032326416

## Discrepancy

EMER LT SYSTEM FAILED BURN DOWN TEST.

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