21.08.1933 Kalinin K-7 gigantic bomber first flight. Kalinin K-7
21.08.1944 Maiden flight of XF8F-1 Bearcat, the last single piston engine fighter used by US Navy. Its performance, short take off and climbing characteristics were highly regarded by any pilot who flew them. Grumman F8F Bearcat
21.08.1989 A highly modified F8F-2 named "Rare Bear" establish a new land plane speed record for propeller driven aircraft of 528.329 mph (about 846 Km/h) since this date this record is still undefeated. Grumman F8F Bearcat