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Cl-300 flight crew reported diverting to a nearby alternate after experiencing a loss of cabin pressure at FL430.
| Attributes | |
| ACN | 1374688 |
| Time | |
| Date | 201607 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Challenger 300 |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pressurization Control System |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
While level at FL430 we detected a cabin pressure change. Noted cabin altitude increasing rapidly. Cabin altitude warning sounded. Donned oxygen mask and executed emergency descent. Other crewmember attempted to notify ATC. Communication was difficult. Uncertain exactly when ATC was informed. We were cleared to descend to requested altitude of 15000 feet (due to terrain). The cabin altitude went as high as 27000 feet. At 15000 feet the cabin began to re-pressurize and returned to normal pressure schedule. Divert was uneventful.
Original NASA ASRS Text
Title: CL-300 flight crew reported diverting to a nearby alternate after experiencing a loss of cabin pressure at FL430.
Narrative: While level at FL430 we detected a cabin pressure change. Noted cabin altitude increasing rapidly. Cabin Altitude Warning sounded. Donned oxygen mask and executed emergency descent. Other crewmember attempted to notify ATC. Communication was difficult. Uncertain exactly when ATC was informed. We were cleared to descend to requested altitude of 15000 feet (due to terrain). The cabin altitude went as high as 27000 feet. At 15000 feet the cabin began to re-pressurize and returned to normal pressure schedule. Divert was uneventful.
Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.