Introduced in 1930, the INF was Waco Aircraft’s answer to customers looking for a bit more power in the economy model of the “F” series of aircraft. The had company offered the 100 horsepower KNF thinking it would be an attractive airplane during the lean times of the depression. Instead, most customers were opting for the 110 horsepower RNF.
Waco Aircraft listened to its customers, many of whom were fond of the Kinner radials, and offered the INF with a 125 horsepower Kinner B5. The extra power added $300 to the price tag, pushing the INF up to $4365 new!
The F model performed well with the new engine and Kinner Motors’ test pilot Leslie Bowman entered an INF at the National Air Races in Chicago where he managed to place second in one of the races.
The INF was also popular as a sportsman aircraft. The 125 horsepower motor and the maneuverability of the airplane made it a popular aerobatic trainer and it was widely used by the Civilian Pilot Training Program during the late 1930s.
Our INF has the honor of being the aircraft pictured in Juptner’s Volume Four as one of the aircraft shown in the INF section. The museum’s airplane was once owned by Roy Shoffner, the man behind the rescue and restoration of the P-38, Glacier Girl. NC619Y eventually changed several owners and moved from Tennessee to Pennsylvania to California to Oregon before eventually landing in Concrete. These days it is flown regularly when the weather is good and the INF continues to make many people happy as they experience the fun of an open cockpit biplane ride.
1930 Waco INF S/N-3364 NC619Y
Wingspan: 29’6” Upper / 27’5″ Lower
Empty Weight: 1,171 lbs
Gross Weight: 1,911 lbs
Cruise Speed: 100 mph
Range: 370 miles