Comet Firsts

	First commercial airliner to use turbojet engines.
	First commercial airliner to use totally hydraulically actuated controls.
	First large commercial airliner to have glued skin panels (Redux).
	First commercial airliner to have a highly pressurised cabin (8.25 psi).
	First commercial airliner to use high pressure refuelling.
Following the accidents to G-ALYP and G-ALYY a number of events took place which were also unique:
	First use of underwater cameras in the collection of wreckage.
	First large scale reconstruction as part of an accident investigation.
	First use of a water tank to encase and test a whole aircraft.
	First use of medical forensics to solve an air accident (G-ALYY).