1883 – Birth of Charles Alexander Holcombe Longcroft, Britsh World War I pilot and squadron commander in the Royal Flying Corps; he went on to become a senior commander in the Royal Air Force.
1912 – A Flanders F.3 Monoplane crashes at Brooklands in England, killing the pilot and his passenger; the accident is studied by the Royal Aero Club; the body later issues the first-ever report into an aviation accident, establishing the science of aviation accident investigation.
1942 – Death of Toshiaki Honda, Japanese World War II fighter ace, killed in action over Port Moresby, Papua (New Guinea).
1948 – Kathleen Agnes “Kick” Kennedy, sister of John F. Kennedy, is killed with three others in the crash of a chartered Skyways de Havilland DH.104 Dove 1 near Privas, France.
1969 – First flight of the Conroy Turbo Three (shown), a Douglas DC-3 modified with turboprop engines by Conroy Aircraft.
2011 – Solar Impulse, a long-range solar-powered plane, flew from Switzerland to Belgium for its first international flight.
