General Dynamics F-111 Aardvark was a supersonic, medium-range interdictor and
tactical attack aircraft that also filled the roles of strategic nuclear
bomber, aerial reconnaissance, and electronic-warfare aircraft in its various

in the 1960s by General Dynamics, it first entered service in 1967 with the
United States Air Force. The Royal Australian Air Force (RAAF) also ordered the
type and began operating F-111Cs in 1973. The F-111 pioneered several
technologies for production aircraft, including variable-sweep wings,
afterburning turbofan engines, and automated terrain-following radar for
low-level, high-speed flight.

design influenced later variable-sweep wing aircraft, and some of its advanced
features have since become commonplace. The F-111 suffered a variety of
problems during initial development. Several of its intended roles, such as an
aircraft carrier-based naval interceptor with the F-111B, failed to
materialize. USAF F-111 variants were retired in the 1990s, with the F-111Fs in
1996 and EF-111s in 1998.

F-111 was replaced in USAF service by the F-15E Strike Eagle for medium-range
precision strike missions, while the supersonic bomber role has been assumed by
the B-1B Lancer. The RAAF was the last operator of the F-111, with its aircraft
serving until December 2010. (Source)

Below is a
report obtained after a Mandatory Declassification Review (MDR) was filed for
the document’s release. It was obtained from the GAO.

GAO Report: Summary of Information Developed on the Navy’s
F-111B Aircraft, June 20, 1967

the Document
[23 Pages, 3.5MB]