Porterfield CP-40 Zephyr

The Porterfield Collegiate is an American training aircraft made by Porterfield Aircraft Corporation in 1936. They are still in service and there are a number of 476 aircrafts build.

Variants

CP-40 Zephyr: Original 40 hp (30 kW) Continental A40 powered version

CP-50

Improved production variant with a 50hp (47kW) Continental A50-4 engine
CP-55: Revised engine cowling
CP-65: Powered by a 65hp (48kW) Continental A65-8 or -9 engine.
FP-60: Powered by a 60hp (45kW) Franklin 4AC-171-A1 engine.
FP-65: Powered by a 65hp (48kW) Franklin 4AC-176-B29 engine.
LP-50: Powered by a 50hp (37kW) Lycoming O-145-A1 engine.
LP-55: Powered by a 55hp (41kW) Lycoming O-145-A3 engine.
LP-65: Powered by a 65hp (48kW) Lycoming O-145-B1 or B2 engine.