Originally registered NC2976 to Grumman in 1948, the first owner of this Mallard became Charles F Kettering, inventor and recently retired head of research for General Motors. Privately owned by him 1949 - 59 as N5115, it also flew for GM until sold to the New York Yankees as N51151 after Kettering's death. Pictured with Crow, Inc (1965 - 78), a Toledo OH charter company bringing customers for Northern Ontario fishing camps. To Chalks International Airline in 1979, it was converted to a G-73T Turbo Mallard in 1982. Re-registered N142PA in 1998, it was retired in 2005 and dismantled in 2007.

75 years Chalk's markings

On Watson Island in a later livery.