# SDR DXTA2022122777050

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 24, 2022
- Submitted: December 28, 2022
- Operation: Air carrier
- Aircraft: [N376QS](https://openairdocs.org/aircraft/N376QS), registered now
- Make and model: Cessna 680CE
- Aircraft serial: 6800180
- Aircraft time: 13,935 hours, 9,243 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: CBS28L
- Part serial: 007288
- Condition: Defective
- Location: Emergency Lights
- Stage of operation: TX
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2022122777050

## Discrepancy

EMERGENCY LIGHTING: WHILE EXECUTING THE POWER ON CHECKLIST, WE DISCOVERED THE EMER LIGHTS WILL NOT ILLUMINATE IN THE ARM POSITION, BUT SOME WILL ILLUMINATE IN THE ON POSITION.   REMOVED AND REPLACED ALL 4 EMERGENCY BATTIERES IAW MM 33-50-10.

---
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.