Praga D

Praga D
Type Air-cooled piston engine
National origin Czechoslovakia
Manufacturer Praga
First run 1936

The Praga Hostivař D was a four-cylinder, air-cooled, horizontally opposed aircraft engine first produced in Czechoslovakia in 1936 but which enjoyed its greatest success after World War II due to the explosion in popularity of sports flying. A version for helicopters was produced post World War II as the Praga DH