Complex sentence: From 1951 to 1973 the Fliegerstaffel 7 used jet aircraft De Havilland D.H.100 Vampire along with De Havilland D.H.112 Venom, which were in use from 1963 to 1974.
Split into simpler sentences: From 1951 to 1973 the Fliegerstaffel 7 used the jet aircraft De Havilland D.H.100 Vampire. Together with De Havilland D.H.112 Venom, which was in use at the Fliegerstaffel 7 from 1963 to 1974.