OTD…April 6 and STS-41C

#OTD in 1985…Challenger suffered an engine shutdown on her way to orbit for a Spacelab mission

#OTD in 1995…Endeavour launched to deploy and retrieve solar satellite and Wake Shield Facility

Today in 1971…The launch of Apollo 14 to Fra Mauro with Alan Shepard, Stuart Roosa and Edgar Mitchell.