In 1940 Phillips Aviation Co built the CT-1 two-seat biplane (ATC 731) designed by Ivan Driggs. A continuation of the Driggs Skylark, offered with a 95hp Menasco B-4 engine or optional 125hp C-4 and sliding cockpit canopy.
Two or three were built, the prototype being NX18989 c/n 100, and one went to Peru.
CT-1 Skylark
Engine 95hp Menasco B-4
Wingspan: 28’3″
Length: 23’2″
Useful load: 586 lb
Max speed: 114 mph
Cruise: 100 mph
Stall: 45 mph
Range: 340 mi
Seats: 2
All Aero 