2011 – (Overnight) NATO aircraft raid Libyan Navy bases at Tripoli, Khoms, and Sirte in the largest attack against Libyan government naval forces thus far in the Libyan Civil War. During the Khoms raids, British aircraft hit two corvettes at Khoms with laser-guided bombs and damage an inflatable-boat manufacturing facility, and NATO aircraft set a warship at Tripoli afire. NATO aircraft also hit a police academy in Tripoli's Tajoura neighborhood.[1]
2009 – A United States Navy Sikorsky HH-60H Seahawk crashes into the Pacific Ocean 16 miles (26 km) SW of San Diego, California. The aircraft was on a routine training flight and returning to the aircraft carrier USS Nimitz when the accident occurred off of Point Loma, California, killing all 5 members of its crew. Only 3 bodies were recovered.
2008 – First flight of the Sukhoi Superjet 100, Russian modern fly-by-wire regional jet in the 75- to 95-seat category.
2003 – CH-46E Sea Knight 156424 of HMM-364 crashes in Al-Hilla, killing four Marines; another Marine drowns trying to rescue the crew.[2]
2000 – Launch: Space Shuttle Atlantis STS-101 at 6:11 am EDT. Mission highlights: ISS supply.
1996 – Launch: Space Shuttle Endeavour STS-77 at 6:30:00.066 am EDT. Mission highlights: SPACEHAB; SPARTAN, Canadian astronaut Marc Garneau's second trip into space.
1993 – Sikorsky VH-60A Sea Hawk, BuNo 163267,1] of HMX-1, MCAS Quantico, Virginia, crashes ~35 miles SW of Washington, D.C. during a routine inspection flight, killing Maj. William S. Barkley Jr., Capt. Scott J. Reynolds, Staff Sgt. Brian D. Haney, and Sgt. Timothy D. Sabel.
1982 – A Royal Navy Westland Sea King HC.4 ZA294, transferring from HMS Hermes to HMS Intrepid during the Falklands/Malvinas conflict, crashes into the sea after a bird strike with a Black-browed Albatross. The crash results in 22 fatalities including 18 members of the 22 Squadron SAS, one fatality each from the Royal Signals and Royal Air Force.
1978 – First prototype Sikorsky YUH-60A Black Hawk, 73-21650, crashes during testing at the Sikorsky plant, Stratford, Connecticut, killing three company personnel. Army investigation reveals that during routine maintenance the night before the fatal flight, the airspeed sensor for the tailplane actuating system was inadvertently left unconnected. As the aircraft transitioned from hover to forward flight, the tailplane did not automatically change its angle and as speed built up, it forced the helicopter's nose down until an attitude was reached from which recovery was impossible. A manual back-up system was available and functioning, and could have been used to correct the tailplane angle, but for unexplained reasons it was not used, possibly due to failure to analyze the nature of the problem in time. Minor modifications are introduced as a result of this accident.
1967 – American aircraft strike military targets in downtown Hanoi.
1965 – Pakistan International Airlines Flight 705, a Boeing 720-040 B on an inaugural flight carrying mostly journalists and owners of travel agencies and crewed by what the airline considered its best crew members, crashes short of the runway while descending to land at Cairo International Airport in Cairo, Egypt, killing 119 of the 125 people on board and injuring all six survivors.
1961 – Venera 1, first planetary probe launched to Venus by the Soviet Union, passed within 100,000 km of Venus and entered a heliocentric orbit.
1958 – Vickers Viscount N7410 of Capital Airlines collides in mid-air with a Lockheed T-33 Shooting Star of the Air National Guard. All eleven on board the Viscount are killed when it crashes at Brunswick, Maryland, as is one of the two crew members of the T-33. (This is repeated on 20 May)
1956 – First flight of the Aerfer Sagittario 2, Italian prototype all-metal single-seat lightweight fighter aircraft, first Italian aircraft to break the sound barrier in controlled flight.
1951 – U. S. Air Force Captain James Jabara becomes the first fighter ace to score his five victories in a jet (an F-86 Sabre) against jets (Mikoyan-Gurevich MiG-15 s). (This is repeated on 20 May, which is the correct date)
1951 – RCAF No. 410 Squadron began re-equipping with North American Sabre fighters. It was the first RCAF squadron to receive this new fighter.
1949 – A JRM Mars sets a new record of 308 for the largest number of people to be carried on a single aircraft.
1947 – The crash of a Beechcraft C-45F Expeditor, 44-87142, of the 4000th AAF Base Unit, two miles S of Windsor, Ontario, Canada, kills three officers and two enlisted men of the 4140th Base Unit, Wright Field, Ohio, who had departed that base at 1805 hrs. on a flight to Selfridge Field, Michigan, to make advance preparations for air shows throughout the country. The twin-prop, twin-tailed aircraft came down in an open area during a driving rainstorm at ~2105 hrs. and broke into six major pieces. One crew attempted to parachute but was unsuccessful. The plane impacted within 500 yards of St. Mary's academy girls' school on the outskirts of Windsor
1945 – 29 aircraft from the British aircraft carriers HMS Ameer, HMS Khedive, and HMS Stalker conduct devastating strikes against Japanese shipping, airfields, and communications in southern Burma and Sumatra.
1945 – First flight of Tupolev TU-10, a Soviet twin-engine, high speed daylight bomber, an evolution of the TU-2.
1943 – Northrop N-9M-1, one-third scale flying testbed for the Northrop XB-35 flying wing design, crashes approximately 12 mi (19 km) W of Muroc Army Air Base, California, killing pilot Max Constant. First flown 27 December 1942, airframe had only logged 22.5 hours, and little data was accumulated before the loss. Post-crash investigation suggested that: "...while Constant was conducting stalls and aft centre of gravity stability tests, aerodynamic forces developed full aft, which were too strong for Constant to overcome, trapping him in the cockpit. To prevent this happening on future flights, a one-shot hydraulic boost device was installed to push the controls forward in an emergency."
1942 – RCAF No. 162 (BR) Bomber Reconnaissance Squadron was formed at Yarmouth, Nova Scotia with Canso A aircraft.
1937 – Prototype Sud-EstLeO H-47 flying boat sustains fatigue failure damage to hull bottom on take-off and, upon landing at Antibes at 19,000 kg (42,000 lb), took in water that displaced the centre of gravity, sinking the aircraft.
1934 – First flight of the Russian Tupolev ANT-20Maxim Gorky, Soviet eight-engine aircraft, at this time the largest aircraft in the world. Capable of carrying 80 passengers, it was used mainly as a mobile propaganda office.
1918 – First prototype Sopwith Salamander, E5429, crashes during test program while with No. 65 Squadron when the pilot has to avoid a tender crossing the aerodrome responding to another crash.
1918 – Raoul Lufbery, commander of the US 94th Aero Squadron|94th (Hat in the Ring) Aero Squadron and second highest scoring American ace with 17 victories, is killed in air combat.
1917 – A Royal Naval Air ServiceCurtiss H-12 Large America flying boat bombs and sinks the German submarine U-36 in the North Sea near the North Hinder light ship while flying a “Spider Web” patrol. U-36 becomes the only German submarine sunk by an aircraft during World War I. (This is repeated on 20 May)
1910 – Birth of Jean Niland (Aka James Williams), French early parachutist and record setter.
1897 – Birth of Frank Luke, Jr., WWI American fighter ace, ranking second among U. S. Army Air Service pilots to Captain Eddie Rickenbacker in number of aerial victories during World War I.
1891 – Birth of Oswald Boelcke, WWI German flying ace and one of the most influential patrol leaders and tacticians of the early years of air combat.
1886 – Birth of Richard Bell Davies VC, CB, DSO, AFC, British WWI fighter pilot and Royal Navy officer.