Under the trade name Aeromold, the Timm Aircraft Corporation developed a special form of construction using bonded plywood. To validate the new structural medium and ultimately to provide a commercial outlet, the company produced its private-venture S-160 / PT-160K (747) cantilever low-wing trainer with tandem accommodation in open cockpits and fixed tailwheel landing gear whose main units looked very spartan with their unfaired tubular metal legs. Designed by Otto Timm the sole S-160, NX15593, had an optional cockpit canopy.
Don Mitchell went to the new Timm Aircraft factory in Van Nuys, where he helped with the molding of the fuselage of the S-160, a plastic-bonded wood basic trainer developed for use by the U.S. Navy and U.S. Army Air Corps. Mitchell later assisted the Civil Aeronautics Administration when the time came to perform the static tests of the aircraft. It passed with flying colours and later became, in April 1941, one of the first if not the very first ever plastic-bonded aircraft to receive an American Approved Type Certificate.
This prototype was developed into the PT-175K (750 2-573) for the civil market, and 262 of a modified variant with the Continental R-670 radial engine were ordered by the US Navy with the designation N2T-1, the aircraft being delivered in three batches during the course of 1943. The one prototype was NX15593 and 262 to the USN as N2T-1 were 41-05875 & 41-05876, 41-32387-32636, and 41-39182-39191.
The USAAF operated them as PT-220.
S-160 / PT-160K
Engine: Kinner R-5, 160hp
Wingspan: 35’0″
Length: 26’4″
Useful load: 614 lb
Max speed: 137 mph
Cruise speed: 125 mph
Stall: 42 mph
Range: 450 mi
Seats: 2
PT-175K
Engine: Kinner R-5, 175hp
Length: 25’6″
Useful load 700 lb
Max speed: 140 mph
Cruise speed: 126 mph
Stall: 50 mph
Range: 520 mi
Seats: 2
N2T Tutor
two-seat primary trainer
Powerplant: l x Continental R-670-4, 164kW (220 hp)
Span: 10.97m (36ft)
Length: 7.57m (25ft 10 in)
Max TO weight: 1236 kg (2,725 lb)
Useful load: 680 lb
Max speed: 144 mph at sea level
Cruise speed: 120 mph
Stall: 50 mph
Range: 350 mi
Seats: 2
Armament: none
All Aero 