On February 28, 1961, Bill Thompson, chief engineering test pilot, made the first flight of the twin-engine Skymaster, fixed gear, twin-boom, from McConnell AFB.
If you are interested in Cessna
airplane development, I suggest the book, Cessna, Wings for the World, The Single-Engine Development Story, by William D. Thompson
Bill Thompson was the Manager of Flight Test & Aerodynamics at Cessna when I was employed there and was the chief engineering test pilot.
was no stranger to record flights as he
set a world's altitude record for lightplanes in 1953 by reaching 37,063 feet in the Cessna XL-19B.
Walt Shiel did not have anything to do with the YH-41 so his historical information is extracted from contemporary documents, William Thompson's excellent Cessna book, military reports and personal interviews with people somehow associated with the YH-41 or second generation involvement.
So far in this article, the books mentioned above by Walt Shiel, Norman Polmar, W.E. Butterworth and William Thompson
, although punctuated by a few errors, are worthwhile contributions to the history of the CH-1