# SDR KCSA202509201167

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 20, 2025
- Submitted: September 20, 2025
- Operation: Air carrier
- Aircraft: [N782CK](https://openairdocs.org/aircraft/N782CK), registered now
- Make and model: Boeing 747-4HQF
- Registry model: [Boeing 747-4HQF](https://openairdocs.org/model/boeing-747-4hqf) (OpenAirDocs)
- Aircraft serial: 37304
- Aircraft time: 51,825 hours, 8,490 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Inoperative
- 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/KCSA202509201167

## Discrepancy

UPPER DECK STA 410 EXIT SIGN FOUND INOP.

---
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.