Designation: KC-97G

Boeing KC-97G

Boeing KC-97G Stratofreighter

A picture of the Boeing KC-97G Stratofreighter

The Boeing C-97 was developed after a request by the U.S. Army Air Forces for a transport aircraft based on the B-29.  The landing gear wings and tail from the B-29 were adapted for use with a distinctive “double bubble” pressurized fuselage to create the C-97.  First flown in 1945, the C-97 proved to be a very successful and versatile aircraft.  Boeing modified the design slightly to create their first post-war airliner, the Boeing 377.

Development of an aerial refueling tanker version of the C-97 using the Boeing-designed flying boom refueling equipment began in 1950, with the first KC-97A delivered in 1951.  The KC-97G was the most produced tanker version of the Stratofreighter.  The most noticeable external difference was the addition of two fixed external fuel tanks to the wings.  This and changes to the internal arrangement of fuel tanks allowed the aircraft to serve without modification as both a tanker and a transport.

Wingspan 141 ft 3 in.


Length 110 ft 4 in.


Height 38 ft 3 in.


Weight 142,500 lbs (loaded)


Max. Speed 375 MPH

Maximum Speed

Service Ceiling 33,000 ft

Service Ceiling

Range 4,300 miles


Engines Four Pratt & Whitney R-4360 Wasp Major radials with 3,500 horsepower each


Crew 5



9th Strategic Aerospace Wing, Mountain Home AFB, Idaho


Serial Number

Pima Air & Space Museum

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