New study says aviator's plane was on land, upright for several days after disappearance Dozens of previously dismissed radio signals were actually credible transmissions from Amelia Earhart, according to a new study of the alleged post-loss signals from Earhart's plane. The transmissions started riding the air waves just hours after Earhart sent her last in-flight message. The study, presented on Friday at a three day conference by researchers of The International Group for Historic Aircraft… (www.msnbc.msn.com) Plus d'info...