G-ALYP was the third Comet built . Its loss marked the second in a series of three fatal accidents involving the Comet in less than twelve months , all caused by structural failures ; it followed the crash of BOAC Flight 783 near Calcutta , India , in May 1953 , and was followed by the loss of South African Airways Flight 201 in April 1954 , which crashed in circumstances similar to BOAC 781 after departing from Ciampino Airport
BOAC Flight 783
BOAC Flight 783
BOAC Flight 781