F-111C A8-146 is one of 24 purchased by the Royal Australian Air Force and delivered during 1973 to equip Nos 1 and 6 Squadrons. The "C" model is a unique combination of the basic F-111A airframe, engines and avionics with long-span FB-111A wings.

The 13th F-111A, 63-9778, as modified in 1973 to participate in the NASA Transonic Aircraft Technology (TACT) programme. The new wing was of shorter span, with blunt tips and reduced aspect ratio. The TACT aircraft was later fitted with a Mission Adaptive Wing (MAW).

General Dynamics F-111E 68-0011 serving with the 79th TFS, 20th TFW at Upper Heyford in the UK. The unit marking has subsequently been changed to UH.

The second production example Grumman/GD F-111B - the last of this Naval version completed. Developed to meet US Navy requirements by Grumman from the basic F-111 design, the F-111B had a much shorter nose and numerous equipment changes to suit its carrier-based role.

FB-111A 68-0260, an example of the strategic bombing variant of the One-Eleven developed for SAC use, in the markings of the 33rd BS, 509th BW, based at Pease AFB, New Hampshire. The name on the nose is "New Hampshire Special".

The F-111A 66-041 became the second prototype EF-111A after conversion by Grumman, making its first flight in this electronic warfare configuration on 17 May 1977. It was delivered to the 366th TFW in November 1981 and a total of 42 will be in service by the end of 1985.

The VC 10K Mk 2 ZA140 minus the wing HDU pods but sporting the markings of No 101 Squadron, which is now in process of forming up on the new tankers at RAF Brize Norton.

Close-ups of the HDU installation in the VC 10’s rear fuselage, and the underwing pod.