# SDR DXTA2026033107462

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 2026
- Submitted: March 31, 2026
- Operation: Air carrier
- Aircraft: [N990QS](https://openairdocs.org/aircraft/N990QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0464
- Aircraft time: 23 hours, 15 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: CBS281
- Part serial: 000022
- Condition: Defective
- Location: Zone 200
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026033107462

## Discrepancy

ON PREFLIGHT OF THE EMERGENCY LIGHTING SYSTEM FOUND FLOOR LIGHT AT SEAT 3 ALONG WITH OVERHEAD LIGHT AT SEAT 3 NOT WORKING. ALSO RIGHT WING INSPECTION LIGHT NOT WORKING AS PART OF THIS SYSTEM.  COMPLIED WITH QRH PROCEDURE AND LIGHTS STILL DO NOT WORK.   PERFORMED EMERGENCY LIGHTS SYSTEM OPERATIONAL CHECK AND WAS ABLE TO DUPLICATE SQUAWK. GAINNED ACCESS AND REMOVED FAILED #2 EMERGENCY BATTERY AND INSTALLED CUSTOMER SUPPLIED REPAIRED BATTERY. CHARGED BATTERY FOR 60 MIN. PERFORMED EMERGENCY LIGHTING ADJUSTMENT TEST AND NO DEFECTS NOTED, VERIFIED ALL EMERGENCY LIGHTS ARE COMING ON. RESECURED ACCESS PANELS AROUND CABIN SEAT #3. REF AMM 33-50-06

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