Registered as NC2976 in 1948 before delivery to General Motors as N5115 in 1949. Reregistered as N51151 in 1959 then to other owners. To Chalk's in 1979. Converted to a G-73T Turbo Mallard in 1982. Reregistered as N142PA in 1998. Withdrawn from use at Fort Lauderdale in 2005 and scrapped in 2007.

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.