Armament-wise, the Model 17 carried 2 x 8mm Ksp m/22F series machine guns in fixed, forward-firing positions as well as an 8mm Ksp m/22R machine gun on a flexible mounting in the rear cockpit. The bombload was up to 1,500lb of conventional drop ordnance.
The Model 17 emerged in its finalized production form as the "B17A". These served as dedicated light bombers and carried the Pratt & Whitney R-1830-S1C3G "Twin Wasp" radial piston engine ranging in horsepower from 1,000hp to 1,200hp. 132 aircraft were delivered to this standard.
The "B17B" followed as another bomber development but carried the Bristol Mercury XXIV engine of 980 horsepower instead (the engines were produced locally by SFA). Total production of this bomber mark ended at 55 units.
The final bomber mark became the "B17C". These were fielded with Italian Piaggio P.Xbis R.C.40D series engines of 1,040 horsepower and total production yielded 77 units. Performance of this model included a maximum speed of 270 miles per hour, a cruise speed of 230 miles per hour, a range out to 1,055 miles and a service ceiling up to 32,155 feet.
The "S17BL" was a turn to the reconnaissance role for the aircraft series and production eventually numbered twenty-one. The floatplane version of this mark sported floats in place of the wheeled, retractable undercarriage and thirty-eight aircraft were completed in this guise.
The Swedish Air Force began receiving the aircraft during 1942 but service and production was limited due to the emergence of jet-powered types. This soon rendered any further development of radial-powered designs moot for most air powers of the world. The Model 17 ran out its days in Swedish service during 1955 and, afterwards, some of this stock was sold off to Ethiopia where they flew until 1968. Finland received only a pair of aircraft in the late 1950s and the duo served as target tugs.
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