In support of an official event 

The Museum will be closed Sunday, May 25
In addition, the Fourth Hangar will be closed Saturday, May 24

Guided tours of the 4th building, normally scheduled at 3:00 p.m. daily, are canceled through May 28.

Effective immediately, the William E. Boeing Presidential Gallery will have limited guest access due to scheduled event preparations. The only accessible exhibits during this time include: Douglas VC-54 Sacred Cow, Flying the President Exhibit, USAF Established Artifact. We anticipate full gallery access will resume by June 5, 2025.

Convair XC-99 Model

Using various types of wood, Lt Col Howard T. Meek (USAF, Ret) constructed this 1/72 scale model of the Convair XC-99 from scratch. The Convair XC-99, a transport version of the Convair B-36 bomber, made its first flight in November 1947. Designed to carry 400 troops, 335 litter patients, or 100,000 pounds of cargo, the double-decked XC-99 was powered by six 3,500 hp Pratt & Whitney R-4360-41 pusher-type engines turning 19-foot reversible-pitch propellers. With a wingspan of 230 feet and a length of 185 feet, the XC-99 had a design gross weight of 320,000 pounds.

Incapable of being refueled in mid-air, the XC-99 had a maximum range of about 8,000 miles with a reduced load. The aircraft required a five-man crew and an equal number of relief crew members for long flights. If placed into production, the XC-99 would have been used to support the Strategic Air Command, but the U.S. Air Force determined that it had no need for such a large cargo aircraft at that time.

Convair briefly considered building a commercial version of the plane, but in the end, Convair built only one XC-99. That aircraft logged more than 7,400 hours of flying time and moved more than 60 million pounds of cargo before making its final flight on March 19, 1957. The XC-99 is in storage at Davis-Monthan AFB. 


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Related Fact Sheets
Convair B-36J Peacemaker
Strategic Air Command
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