Falcon 50
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 35; Flight Crew Total 12500; Flight Crew Type 2400
Aircraft Equipment Problem Critical; Inflight Event / Encounter Other / Unknown
Air Traffic Control Provided Assistance; Flight Crew Overcame Equipment Problem; Flight Crew FLC Overrode Automation; Flight Crew FLC complied w / Automation / Advisory; Flight Crew Landed in Emergency Condition
Aircraft
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.
[Report narrative contained no additional information.]
A Falcon 50 flight crew reported an aircraft over-pressurization condition. The aircrew depressurized the cabin and landed.