In Finnish Air Force service, the B-239s were regarded as being easy to fly, a "gentleman's travelling plane."[32] The Buffalo was also popular within the FAF because of its relatively long range and also because of a good maintenance record. This was in part due to the efforts of the Finnish mechanics, who solved a problem that plagued the Wright Cyclone engine by inverting one of the piston rings in each cylinder, which had a positive effect on reliability.
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