Summary: The DH Comet was the first jet airliner and was going to be a world beater until there were unexplained and sudden losses. The investigation that followed opened the eyes of the entire industry to the dangers of aircraft pressurisation and metal fatigue.<br> <br> <br> <br> An enormous water tank was erected test the fuselage during repeated pressurisation runs.<br> <br> <br> <br> The fuselage of G-AYLP which broke up in mid air.<br> <br> <br> <br> Images under Creative Commons licence with thanks to UK Gov, Imperial War Museum and Krelnik.
