de Havilland DH115 Vampire T.11
The Vampire T.11 was the first advanced jet fighter trainer to use side-by-side seating. It was argued that having the instructor beside him gave the trainee a higher level of confidence, enabled each to see better what the other was doing, and gave both the same gun-sight view. So the existing broad fuselage ‘pod’ of the Vampire NF.10 two-seat radar night fighter was adapted for the dual control trainer. The wings, intakes, tail booms, undercarriage, engine installation, control, fuel tanks, identification light etc., are essentially similar to those of the Vampire FB.6.