5 February 1962 (USA) — A Sikorsky HSS-2 Sea King of the US Navy sets a world helicopter speed record of 210.6 mph, in the course of a flight between Milford and New Haven, Connecticut.

5 February 1951 (USA/Canada) — The United States and Canada announce the establishment of the Distant Early Warning (DEW), the air defense system that uses more than 30 radar stations located across the northern portion of the continent.

5 February 1949 (USA) — An Eastern Air Lines Lockheed Constellation lands at LaGuardia, New York, at the end of a flight of 6-hrs 18-min from Los Angeles, a coast-to-coast record for transport aircraft.

5-6 February 1939 (UK) — An international speed record of 152.159-mph was established by A. Henshaw, Great Britain, for flight from London, England to Cape Town, South Africa in 39-hrs 25-min in Percival New Gull airplane with D.H. Gipsy VI-2 205-hp engine. Speed for return trip was 151.456-mph and 39-hrs 36-min.

5 February 1932 (China) — Two Nakajima Type 3 fighters leave the aircraft carrier Hosho to take on Chinese fighters over Shingu, China, in the first air battles fought by Japanese Air Forces.

5 February 1929 (USA) - Frank Hawks and Oscar Grubb land their Lockheed Air Express in New York after a record flight of 18-hrs 20-min from Los Angeles, California.

5 February 1919 (Germany) — The first regular, daily passenger service in the world is launched at Berlin's city airfield. A German airline, Deutsche Luft-Reederei (D.L.R), operates the new service on route from Berlin to Weimar via Leipzig.

5 February 1914 (USA) — Lt. J.C. Morrow became 24th and last flier to qualify as Military Aviator.