Conformal fuel tanks (CFTs) are additional fuel tanks fitted closely to the profile of an aircraft that extend the endurance of the aircraft.
A McDonnell Douglas F-15E Strike Eagle fitted with conformal fuel tanks under the wing roots
Ground crew handling the CFT of an F-15E
Israeli F-16I Sufa, based on the F-16D Block 50/52+, with 2 attached CFTs on top of the aircraft near the wing root and 2 wing-mounted drop tanks.
A large number of variants of the General Dynamics F-16 Fighting Falcon have been produced by General Dynamics, Lockheed Martin, and various licensed manufacturers. The details of the F-16 variants, along with major modification programs and derivative designs significantly influenced by the F-16, are described below.
U.S. Air Force YF-16 and YF-17, 1982
A Portuguese Air Force F-16A outfitted with AIM-9 Sidewinder missiles, AN/ALQ-131 ECM pod, and external fuel tanks.
A Venezuelan Air Force F-16B