Clarence Junior Hopper, 52, disappeared from West Palm Beach, Florida on February 7, 1980. He and fellow crop duster Charles Tim departed West Palm Beach Airport in a twin-engine Beechcraft they had bought in September 1979, bound for a flight over the Gulf of Mexico. Neither man nor the aircraft were ever seen again, and extensive searches turned up no trace.

Both men lived in South Haven, Michigan at the time and worked for Mueller Crop Dusting Service during the summer; Clarence also kept a winter residence in Belle Glade, Florida. His case is officially classified as lost/injured missing and he is presumed to have perished when the plane likely crashed into the ocean. The family later pursued legal action over life insurance.

If anyone knew Clarence, Charles Tim, or had information about that flight or the aircraft, please share what is known.