Editing Lockheed JetStar (section)

==Variants==
;JetStar I
:Business, executive transport aircraft, with accommodation for a crew of two and ten passengers, powered by four {{convert|3300|lbf|kN}} thrust [[Pratt & Whitney JT12A]]-8 turbojet engines.
;JetStar II
:New production version, powered by four {{convert|3700|lbf|kN}} thrust [[Garrett TFE731]]-3 turbofan engines, and fitted with revised external fuel tanks, 40 built.
;JetStar 731
:Modified version, fitted with four Garrett TFE731-1 turbofan engines, and equipped with redesigned external fuel tanks.
;C-140A
:Flight inspection aircraft for the US Air Force, similar to the JetStar I, five built.
;C-140B
:Passenger, cargo transport aircraft for the US Air Force, similar to the C-140A, five built.
;VC-140B
:VIP transport aircraft for the US Air Force, similar to the C-140B, six built.
;C-140C
:Two JetStar 6s were ordered by the United States Navy, originally designated UV-1, but not delivered.
;T-40
:US military designation for a proposed trainer version of the C-140 for evaluation, not built.
;AAI FanStar
:Conversion by American Aviation Industries with two [[General Electric CF34]] engines in place of the four JT12 turbojets or TFE731 turbofans which first flew on 5 September 1986.<ref name="Janes89" /> Only one aircraft was converted. The work on the interior of the demonstrator was the subject of litigation in federal court in the late 1980s and early 1990s.<ref>{{cite court|litigants= Midcoast Aviation, Inc. v. General Electric Credit Corp.|vol= 907|reporter= F.2d|opinion= 732|court= 7th Cir.|date= 1990}}</ref>