Design and Development
From the time it entered service the SO3C suffered two serious flaws: in-flight stability problems and problems with the unique Ranger air-cooled V-shaped inline engine. The stability problem was mostly resolved with the introduction of upturned wing tips and a larger rear tail surface that extended over the rear observer's cockpit. The additional tail surface was attached to the rear observer's sliding canopy and pilots claimed there were still stability problems when the canopy was open. The canopy was often open because the aircraft's main role was spotting. While the in-flight stability problem was eventually addressed (although not fully solved), the Ranger XV-770 engine proved a dismal failure even after many attempted modifications. Poor flight performance and a poor maintenance record led to the SO3C being withdrawn from US Navy first line units by 1944. The older biplane SOC was taken from state-side training units and restored to first-line service on many US Navy warships until the end of World War II.
Read more about this topic: Curtiss SO3C Seamew
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