Row upon row of the sturdy Stearman Kaydet stand inside the huge flight hangar at the Boeing Wichita plant ready for ferrying to the training field. Pictured are the PT-17 and the N2S-3 trainers. The Wichita Model 75, two-seater Stearman Kaydet biplane, introduced in 1934, became an unexpected success during World War II. Despite its almost obsolete design, its simple, rugged construction made it ideal as a trainer. Boeing built 8,584 Kaydets in all versions, plus the equivalent of 2,000 more in spare parts between 1936 and 1944. Many were still in use during the 1960s as crop dusters.