Boeing Model 493

The Boeing Model 493 was a proposed, large, turboprop-driven transport aircraft envisaged in the early 1950s by the United States aircraft manufacturer Boeing for use by the USAF.

Key Information

Model 493
General information
Type	Cargo transport
National origin	United States
Manufacturer	Boeing
Status	Cancelled
Number built	None
History
First flight	Never built
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The Model 493-3-2 was similar to the baseline C-97 Stratofreighter but differed in having a gull-wing and increased wingspan, but also turboprop engines. The wingspan measured 165 feet from tip to tip, and the fuselage diameter was increased to 214 inches to accommodate a second deck as on the Douglas C-124 Globemaster II.^[1][2][3]

Although a promising design, the Model 493 never left the drawboard because of the USAF's announcement of the XC-Heavy competition based on the concept of pod-equipped airlifter.^[1]

The Model 493-3-2 is known in some sources as the C-127, but Air Force records show that the C-127 designator was allocated to the Douglas C-124B.^[1][3]

• List of military aircraft of the United States

• James C. Fahey (1978). USAF Aircraft 1947-1956. Air Force Museum Foundation.