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A falcon 50 flight crew reported an aircraft over-pressurization condition. The aircrew depressurized the cabin and landed.
| Attributes | |
| ACN | 1342991 |
| Time | |
| Date | 201603 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Falcon 50 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Route In Use | Direct |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pressurization Control System |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 35 Flight Crew Total 12500 Flight Crew Type 2400 |
| Person 2 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Flight Instructor Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 20 Flight Crew Total 8000 Flight Crew Type 300 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Inflight Event / Encounter Other / Unknown |
Narrative:
We were in cruise flight at FL340. A sudden dramatic change of cabin pressurization occurred causing a major over pressurization of the cabin. Crew completed all procedures to regain control of cabin pressure to no avail. With the only option left to prevent further over pressurizing of the cabin; emergency dumping; I initiated emergency descent to 10;000 feet. Center was exceptionally helpful.post maintenance trouble shooting was performed. A crack static line connecting the electromechanical outflow valve and mechanical outflow valve was found. This was cause of all of our pressure problems.
Original NASA ASRS Text
Title: A Falcon 50 flight crew reported an aircraft over-pressurization condition. The aircrew depressurized the cabin and landed.
Narrative: We were in cruise flight at FL340. A sudden dramatic change of cabin pressurization occurred causing a major over pressurization of the cabin. Crew completed all procedures to regain control of cabin pressure to no avail. With the only option left to prevent further over pressurizing of the cabin; emergency dumping; I initiated emergency descent to 10;000 feet. Center was exceptionally helpful.Post maintenance trouble shooting was performed. A crack static line connecting the electromechanical outflow valve and mechanical outflow valve was found. This was cause of all of our pressure problems.
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.