A faulty altitude detector was cited as a contributing factor in the last fatal crash of the same kind of helicopter owned by the same company as the Med Flight chopper that crashed Saturday night near La Crosse.
The National Transportation Safety Board, which is investigating the UW Hospital Med Flight crash that killed three, said a faulty radar altimeter contributed to the crash of a Eurocopter EC135 helicopter in the Potomac River in Washington, D.C., in January 2005.