1900 – Birth of Wilmer Lower Stultz, American military aviator and test pilot; he made the first non-stop flight between New York City and Havana, Cuba.
1937 – First flight of the Junkers Ju 89, a German heavy bomber prototype.
1940 – A trio of Vickers Wellingtons of No.115 Squadron and two Bristol Blenheims of No.254 Squadron attack Stavanger-Sola airfield in the first Royal Air Force attack on Norway. It also is the first of 16 attacks on the airfield over the following days.
1957 – North American Aviation is issued a preliminary contract to build prototypes of the XF-108 Rapier (artist concept shown) long-range interceptor aircraft for the U.S. Air Force.
1974 – Death of Georgiy Nikanorovich Zhidov, Soviet World War II fighter ace.
2011 – NATO announces Operation Unified Protector airstrikes have destroyed 49 Libyan government tanks since April 9, including 25 on April 10, and 11 on April 11.