# SDR DXTAT2PL6D005H3Z5

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 3, 2017
- Submitted: November 22, 2017
- Operation: Air carrier
- Aircraft: [N357QS](https://openairdocs.org/aircraft/N357QS), registered now
- Make and model: Cessna 680CE
- Aircraft serial: 6800155
- Aircraft time: 10,033 hours, 6,524 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Coupling
- Part number: S3295815
- Condition: Torn
- Location: Duct
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTAT2PL6D005H3Z5

## Discrepancy

EXPERIENCED A LOSS OF CABIN PRESSURIZATION AT FL400.  SELECTING BLEED AIR TO HP MODE, USING ALTITUDE SELECT AND MANUAL CONTROLLER SELECTION DID NOT CHANGE THE 300-400 FPM CABIN RATE OF CLIMB. THERE WERE NO UNUSUAL SOUNDS AND THE ANTI-ICE WAS OFF.   OPERATOR REPORTS LOSS OF CABIN PRESSURE IN FLIGHT. COMPLIED WITH SB680-21-08. ALL PRESSURIZATION AND OPERATIONAL CHECKS NORMAL. PARTS INSTALLED DUCT COUPLINGS S3295-8-15

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