A fragment from legendary aviator Amy Johnson’s stricken plane will go on show at a Kent museum after being sold off at auction. Believed to be the only piece of the aircraft in existence, the section from her parachute exit door was retrieved after her fatal crash into the Thames Estuary near Herne Bay on January 5, 1941. Now the artefact has been acquired by the Kent Battle of Britain Museum at Hawkinge following keen bidding at Hansons Auctioneers today where the hammer eventually fell at £2,800. Chairman, curator and volunteer at the museum, Dave Brocklehurst says he is delighted to acquir…