“lindbergh

The caption is incorrect. His full name was actually William Arthur Mankey. The confusion likely arises from the fact that Mankey primarily used his middle name, "W. Arthur Mankey", W. Art Mankey", "Arthur Mankey", "Art Mankey". Adding to the confusion is his obituary in the April 20, 1985 issue of the Los Angeles Times, where the name "William Mankey" is used in the headline. William Mankey Dies; Modified Wing Design of Lindbergh's Plane April 20, 1985 William Arthur Mankey, the aeronautical engineer whose wing modifications helped make possible Charles A. Lindbergh's solo crossing of the Atlantic in 1927, has died. He was 90 when he died April 8 in Las Vegas, where he had gone on a senior citizens' outing. Mankey, with Gerry Vultee and Jack Northrop, formed the drafting department at Donald Douglas' original airplane plant in Los Angeles in the early 1920s. A friend of Douglas, T. Claude Ryan, had designed a high-wing monoplane but wanted to increase its payload. Redesigned Wing Ryan asked Douglas for assistance and Mankey and Northrop, who later formed his own aircraft manufacturing company, were loaned to Ryan's San Diego plant on weekends where they redesigned the plane's wing, lessening its weight. It was this model that, modified further, became Lindbergh's "Spirit of St. Louis." After Lindbergh's flight, when orders for the highly acclaimed plane began to flood Ryan's factory, Mankey had joined Ryan as chief engineer and was able to get the craft--now dubbed the B-1 Brougham--certified for sale. In the early 1930s, Mankey became one of the first members of the Bureau of Naval Aviation and then joined Glenn L. Martin as the Martin company's chief project engineer on the B-26 attack bomber, a major part of America's air arsenal in World War II. After the war, Mankey rejoined Ryan briefly and then went with the Defense Department, retiring in 1966. He is survived by his wife, Lucille, and a son, Jack.

This is a North American L-17A, possibly after conversion by Ryan to L-17C. Ryan took over the manufacture and built L-17B and converted a number of L-17A into L-17C. Stig

Interesting to see that all five of the YPT-25 more or less rolled off the line at the same time (no USAAF serials yet in place...) Stig