A Boeing 'Stearman' PT-17 (Model 75), Military Serial: 38522 USN. Construction Number: 75-08143. Model: N2S-5. Photo by Bob Nelson.
The 'Kaydet' was a conventional biplane of rugged construction with large, fixed tailwheel undercarriage, and accommodation for the student and instructor in open cockpits in tandem. The radial engine was usually uncowled. -wiki