The Cessna T337H Skymaster is high-wing, six-seats, twin-engine utility aircraft in push-pull configuration having one powerplant
mounted as tractor and the other as a pusher, the airscrew for the latter revolving between twin booms carrying the tail surfaces.
The combined tractor and pusher engines produce centerline thrust and a unique sound. The Cessna 337 Super Skymaster was a further
development of the first Skymaster, the Model 336 Skymaster, that had fixed landing gear and was flown first on 28 February 1961.
Deliveries of the Cessna 336 Skymaster started in May 1963, with 195 having been built by January 1965, when supersed by Model 337.
In February 1965, Cessna introduced the Model 337 Super Skymaster, embodying a similar centre-line thrust concept to that introduced
by the Model 336. The Model 337 was externally similar to its predecessor, apart from a fully retractable undercarriage, but was
largely a new aircraft with increased wing incidence, relocated forward engine and an increased tailboom angle. In 1966, the
turbocharged T337 was introduced, and in 1973, the pressurized P337G entered production. The Cessna O-2 Skymaster was a military version
of the Cessna 337 Super Skymaster. It was purchased by the U.S. Air Force beginning in 1967 in two versions. The O-2A was used in the
forward air control mission. It was equipped with additional radios and ordnance hard points under the wings for rocket and machine gun
pods. The O-2B was the 337 civilian version modified to carry a large loud speaker on the right side of the fuselage and a leaflet chute
in the belly for psychological warfare operations. Cessna built 2993 Skymasters of all variants (the "Super" prefix was subsequently
dropped from the name), including 114 Cessna 337F Skymasters and 513 military O-2 versions. Production in America ended in 1982, but
was continued by Reims in France, with the FTB337 STOL and the military FTMA Milirole. Reims produced a total of 94 Skymasters.
On 23 April 2012, four Cessna T337H Turbo Skynmaster aircraft came in at
Groningen Airport Eelde. These Cessna T337H aircraft (N925AS; N930AS;
N946AS; N956AS) are registered with Airscan Inc., Titusville, Florida,
USA, and on their way out of Africa to the USA. The
Cessna's came in from Zagreb and departed to Wick en route to Florida
via Iceland and Greenland. Turbo Skymaster N946AS was operated before as
N1359L by Heat Transfer Specialists Ltd., Coon Valley, Wisconsin, USA.