The Convair XP5Y-1 prototype in 1950. It first flew on 18 April 1950 at San Diego and crashed in 1953. The type was not built, only small numbers as R3Y <i>Tradewind</i> transports.
USN
1950
U.S. Naval Aviation News March 1950 <a rel="nofollow" class="external autonumber" href="http://www.history.navy.mil/nan/backissues/1950s/1950/mar50.pdf">[1]</a>