Engine: Pratt & Whitney R-1830 of 1,050 hp. Top Speed: 320 mph. Span: 36 ft. 0 in. Range: 600 miles Length: 26 ft. 10 In. Ceiling: 30,000 ft. Height: 9 ft. 9 in. The P-35, forerunner of famed P-47 thunderbolt, was first single-seat, all-metal pursuit plane with retractable landing gear and enclosed cockpit to enter Air Corps service. Some fought Japanese in Philippines early in WWII. P-35A displayed at AF Museum. W-PAFB, Ohio, was donated by Sweden.