# SDR DXTA2025011701968

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 14, 2025
- Submitted: January 22, 2025
- Operation: Air carrier
- Aircraft: [N920QS](https://openairdocs.org/aircraft/N920QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0342
- Aircraft time: 2,010 hours, 1,406 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Shutoff Valve
- Part number: 471319
- Part serial: 1884
- Condition: Defective
- Location: Zone 100
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2025011701968

## Discrepancy

DEPARTED SLC, CLIMBING THROUGH 13.5 FOR ABOUT 2 TO 3000 FEET AT 240KT, HAD A LOUD SOUND FROM THE CABIN PRESSURE DOOR THAT EVENTUALLY STOPPED. DESCENDING FROM 8000 FEET TO AT LEAST 6000 FEET @ 2.8PSI, 1300CAB ALT WE HAD ANOTHER LOUD PRESSURE SOUND FROM THE DOOR. CORRECTIVE ACTION: REPLACED EMER SHUT OFF VALVE. OPS CHECK GOOD. IAW CESSNA 680A MM 21-12-05

---
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.