# SDR DXTA2025062704046

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 25, 2025
- Submitted: June 27, 2025
- Operation: Air carrier
- Aircraft: [N651QS](https://openairdocs.org/aircraft/N651QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0273
- Aircraft time: 4,241 hours, 2,788 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: G Switch
- Part number: 76072000
- Part serial: 426006
- Condition: Failed
- 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/DXTA2025062704046

## Discrepancy

UPON COMPLETION OF LAST FLIGHT OF DAY & POST FLIGHT SHUTDOWN AND INSPECTION, DISCOVERED EMERGENCY LIGHTS IN AFT OF PLANE ON & COULD NOT EXTINGUISH (EXIT SIGN ABOVE TOILET, EMER LIGHT ABOVE TOILET, FLOOR LIGHT BELOW TOILET, & EXIT SIGN ON BULKHEAD ABOVE SEAT 7). PER MCC INSTRUCTION TRIED 5G RESET SWITCH BUT ALL LIGHTS REMAINED ON.  ARRIVED ON SITE. GAINED ACCESS TO ACFT. APPLIED POWER & DUPLICATED PILOTS DISCREPANCY. AFTER CYCLING G-SWITCH FOR EMMER BATT #4 SEVERAL TIMES & COMPLETING A POWER CYCLE FAULT CLEARED. PERFORMED INCOMING RECEIVING INSPECTION OF CUSTOMER SUPPLIED NEW SWITCH WITH NO DEFECTS NOTED. REMOVED & REPLACED SWITCH P/N 7607-2-000 REFERENCED AMM 33-50-11. OPS CHECK GOOD.

---
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.