Two medical aircraft crash on Wednesday , one in Iowa , the other in Oklahoma . NTSB records show the company has been involved in 12 other helicopter accidents , which included 20 deaths , since 2007 . The pilot of the plane that crashed said he was flying too slow and lost control over a farm field near Des Moines. Increase in accidents from 2002 to 2005 earned federal attention in 2006 .
Two medical aircraft crash on Wednesday , one in Iowa , the other in Oklahoma . The pilot of the plane that crashed said he was flying too slow and lost control over a farm field near Des Moines. Increase in accidents from 2002 to 2005 earned federal attention in 2006 .