Boeing KC -135

The Boeing KC-135 is a refueling aircraft developed in 1956 by the Boeing Aircraft Company on the basis of the Boeing 367-80. The aircraft proved to be one of the most successful 

of its type and more than 600 were built. Its military service lasted more than 60 years, during which time several engine and avionics upgrades took place. The KC-135R variant with 

the CFM F108 engine appeared in the late 1990s and turned out to be one of the last in the huge KC-135 family.

Aircraft of this type took an active part in all military conflicts from the Vietnam War onwards. KC-135s were the fuel donor for almost every type of US Air Force aircraft, and their 

contribution to the overall military cause cannot be fully estimated. In 2019, the KC-135 was replaced by the more modern KC-46, and the KC-135 began to be decommissioned, 

some of them being transferred to aviation museums. In addition to the US Air Force, they were operated in small numbers by the French Air Force and the Singapore Air Force.