• An electric-powered multicopter achieves sustained flight without ground assistance for the first time, when the battery-powered, 16-rotor e-volo VC1 helicopter achieves an altitude of 3 meters (10 feet) for 90 seconds at Karlsruhe, Germany. The VC1 reportedly can remain airborne for 20 minutes on a single charge. The flight will win e-volo the Lindbergh Prize for advances in environmentally friendly ("green") aviation. - 21st October 2011
  • Northwest Airlines Flight 188, an Airbus A320-212 with 149 people on board, lands in Minneapolis, Minnesota, an hour late after its pilots overshoot Minneapolis when they become distracted by a discussion of their schedules. - 21st October 2009
  • Agreement announced for sale of London Gatwick Airport from BAA Limited to Global Infrastructure Partners, to comply with Competition Commission requirements. - 21st October 2009
  • Azza Transport Flight 2241, a Boeing 707-330C, crashes on take off from Sharjah International Airport, United Arab Emirates; all 6 crew members are killed. - 21st October 2009
  • Tan-Sahsa Flight 414, a Boeing 727, crashes into a mountain known as Cerro de Hula near Tegucigalpa, Honduras due to pilot error; 127 of 146 on board die. - 21st October 1989
  • British Airways is offered for public sale by the British government - 21st October 1986
  • A Swiss Air Force Sud Alouette III crashed near Urnasch, six killed. - 21st October 1982
  • A man named Frederich Valentich mysteriously disappears while flying a Cessna 182L over the Bass Strait in Australia, after encountered an unidentified flying object. During six minutes after first asking air traffic control about other aircraft in the area, he continued to describe a craft of some sort that did not resemble an airplane and was moving all around him as he flew. His transmission ultimately ended with 17 seconds of metallic scraping sounds before cutting. No trace of him or his aircraft were ever found. - 21st October 1978
  • First flight of the Italair Pegaso - 21st October 1971
  • An explosion in the lavatory blows the tail off of Philippine Airlines Flight 215, a Hawker Siddeley HS 748-209 Series 2, while it is flying over the Philippine Islands at 10,500 feet (3,200 m) during a flight from Cauayan City to Manila; the aircraft crashes, killing all 40 people on board. A bomb is suspected. - 21st October 1970
  • Caledonian Airways takes over British United Airways. - 21st October 1970
  • During a Laughlin AFB, Texas, airshow, USAF Thunderbirds No. 6, an North American F-100D-20-NA Super Sabre, 55-3520, piloted by Capt. Merrill A. "Tony" McPeak, crashes, but he succeeds in ejecting as the plane broke up. As McPeak pulls up to begin a series of vertical rolls, the wing center box fails at ~6.5 Gs, and the engine catches fire as the center fuel tank ruptures, dumping fuel into the engine bay. Pilot ejects and lands near to the crowd. This crash limited flying on all USAF Super Sabres to 4G. This was the first Thunderbird crash during a performance. - 21st October 1967
  • First flight of the Yakovlev Yak-40 - 21st October 1966
  • First flight of the Breguet Atlantic - 21st October 1961
  • Vought F8U-1 Crusader, BuNo 145357, 'AB 12', of VF-11, arrestor hook and right landing gear broke during heavy landing on USS Franklin D. Roosevelt, with aircraft catching alight and going over port side. A series of nine photographs taken by Photographer's Mate L.J. Cera showed the crash sequence with pilot Lt. J.G Kryway ejecting in Martin-Baker Mk. F-5 seat just as the fighter leaves the deck. These images were widely distributed in the Navy to assure pilots that the seat could save them. Kryway escapes with minor injuries, being picked up by helicopter ten minutes later. Joe Baugher notes that date of 21 August 1961 has also been reported. - 21st October 1961