Flight Crew Last 90 Days 25; Flight Crew Total 6400; Flight Crew Type 1500
Aircraft Equipment Problem Critical; Flight Deck / Cabin / Aircraft Event Other / Unknown
Aircraft Aircraft Damaged; Flight Crew Diverted; Flight Crew Landed in Emergency Condition
Aircraft
We had to descend immediately after the door and window blew out. We were able to descend and land. The wind noise did not allow us to have communication with Center while we came down from 21;000 feet.
During cruise flight at FL210 the pilot of a kit built high performance aircraft experienced a door/window unit failure and a subsequent rapid decompression.