HC Deb 15 February 1965 vol 706 c159W
Mr. Fisher

asked the Secretary of State for Defence if he will estimate how many hours a Hunter aircraft can fly before there is any evidence of metal fatigue.

Mr. Healey

The answer varies according to the rôle and environment in which the aircraft operate but practical tests suggest that for aircraft operating in the worst conditions the safe life is at least 3,800 hours.