# SDR DXTA2026042807810

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 26, 2026
- Submitted: April 28, 2026
- Operation: Air carrier
- Aircraft: [N535QS](https://openairdocs.org/aircraft/N535QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0078
- Aircraft time: 9,825 hours, 6,509 cycles
- System (JASC): [5297 · Door System Wiring](https://openairdocs.org/jasc/5297)
- Part: Pcb
- Part number: 746810120
- Part serial: 337185123
- Condition: Faulted
- Location: Zone 800
- Stage of operation: DE
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026042807810

## Discrepancy

JUST BEFORE LANDING WE HAD A CABIN DOOR OPEN CAS MESSAGE. WHILE ON THE GROUND WE TRIED TO RESET IT USING THE PROCEDURE IN THE QRH. STEP FOUR WAS UNSUCCESSFUL, WE COULD NOT GET THE CHECK HANDLE /PUSH TO OVERRIDE LIGHT TO FLASH. : REMOVED AND REPLACED NC105 CABIN DOOR MONITOR PCB PER AMM 24-60-40. OPS CHECKS GOOD NO FURTHER ACTION REQUIRED.

---
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.