• AH-1W SuperCobra 164591 from HMLA-169 crashes into Lake Habbaniyah, killing the pilot and a maintenance ground crew member on board. - 27th May 2006
  • Delta Air Lines begins service between Cincinnati, Ohio, and New Haven, Connecticut. - 27th May 2004
  • Julie Payette flew aboard Discovery on STS-96. She became the first Canadian to visit the International Space Station. - 27th May 1999
  • Launch: Space Shuttle Discovery STS-96 at 06:49 EDT. Mission highlights: ISS supply. - 27th May 1999
  • First flight of the Bombardier CRJ-900, a Canadian regional airliner. - 27th May 1999
  • An Indian Air Force Mikoyan-Gurevich MiG-21MF, C-1539, of 17 Golden Arrows Sqn., is shot down by a Pakistani FIM-92 Stinger while searching for downed MiG-27 pilot during the Kargil conflict. Aircraft comes down at 1105 hrs., some 7.5 miles (12 km.) inside Pakistani-Administered Azad Kashmir. Although pilot Squadron Leader Ajay Ahuja ejected safely, Pakistan claimed he had been killed. After his body was returned 28 May, "initial examination found bullet wounds, which suggested he had been shot after ejecting. This was the first time since 1971 that India had lost an aircraft to hostile fire. - 27th May 1999
  • The prime minister of Mauritania, Ahmed Ould Bouceif, dies in an airplane crash in the Atlantic Ocean off Dakar, Senegal. - 27th May 1979
  • Aeroflot Flight 331, an Ilyushin Il-62, crashes while on approach to Havana, Cuba, killing 68 out of 70 people on board, plus one person on the ground. It remains the second-worst air accident in Cuba's history. - 27th May 1977
  • A USAF Lockheed C-5A Galaxy, 67-0172, c/n 500-0011, catches fire while taxiing at Air Force Plant 42, Palmdale, California, due to an electrical fire in the cargo compartment. Five crew escape, but seven firefighters suffer minor injuries fighting blaze. Aircraft destroyed. - 27th May 1970
  • The first crossing of the English Channel by a VTOL (vertical take-off and landing) aircraft is made by the Short SC.1, which is flown by A. Roberts from England to Paris for the Paris Air Show. - 27th May 1961
  • First flight of the McDonnell Douglas F-4 Phantom II - 27th May 1958
  • Introduction: Republic F-105 Thunderchief - 27th May 1958
  • First flight of the Sud Aviation Caravelle - 27th May 1955
  • A Boeing B-47E-10-DT Stratojet, 52-054, returning from a night navigation training mission after slightly more two hours aloft crashes on the runway at Lincoln AFB, Nebraska, at 0254 hrs. while landing. Brake parachute failed and it overran the runway - no injuries. Joe Baugher cites date of 24 May. John Kodsi, aircraft commander, and Sgt. Edward Seagraves, plus two other crew survive. - 27th May 1955
  • The government awarded Canadair a contract to produce 13 maritime patrol/ASW aircraft based on the Bristol Britannia. It was designated Canadair CL-28 ARGUS. - 27th May 1954