#OTD in 1969, Darryl Greenamyer broke the 30-year-old speed record for piston-engine aircraft held by the German Messerschmitt Me 209 when he reached 483 mph in this heavily modified Grumman Bearcat. https://s.si.edu/3yNaTue #AirSpacePhoto
https://twitter.com/airandspace/status/1559555773457383424