January 12 - the RAF Auxiliary Air Force Reserve is formed
February 9 - Alex Henshaw sets a new speed record for the round trip between England and Cape Town in 4 days 10 minutes in a Percival Mew Gull
March 30 - Hans Dieterle sets a new airspeed record in a Heinkel He 100 of 746 km/h (464 mph).
April 28 - Vladimir Kokkinaki and Mikhail Godienko attempt a non-stop flight from the Soviet Union to New York but are forced down on Miscou Island in bad weather the next day.
June 16 - Air France commences hourly flights from Paris to London
June 28 - Britain's Women's Auxiliary Air Force is formed.
July 6, Olga Klepikowa sets a world record by flying a glider 746 km (466 miles) from Moscow to Otradnoje.
July 20 - first flight powered by liquid-fuelled rocket made by Erich Warsitz in the Heinkel He 176
August 11 - Pan American World Airways begins scheduled flights from New York, New York to Southampton, England.
August 26 - the Messerschmitt Me 209 sets a new world speed record of 755 km/h (469 mph).
August 27 - first flight made entirely on turbojet power made by Erich Warsitz in the Heinkel He 178
September 1 - Germany invades Poland. The Luftwaffe plays a key tactical bombing role in neutralising Polish defences.
September 3 - Britain and France declare war on Germany. World War II breaks out.
September 3 - Paratroops are used for the first time, with German units dropped into Silesia, behind Polish lines.
September 3 - Armstrong Whitworth Whitleys are used to drop propaganda leaflets into German cities.
September 4 - first British bombs of the war dropped on German targets, with a Bristol Blenheim of 110 Squadron attacking the German fleet.
October 8 - First RAF victory of World War II when a Lockheed Hudson shoots down a Dornier Do 18 over Jutland.
October 16 - the Luftwaffe attacks its first British targets - Royal Navy warships in the Firth of Forth.
the Luftwaffe begins dropping sea mines around the British coastline.
November 24 - BOAC is formed by the merger of Imperial Airways and the original British Airways.
November 30 - Soviet air raids on Helsinki and Viipuri mark the outbreak of the Winter War.
December 18 - the Royal Air Force abandons daylight raids on Germany after a raid by Vickers Wellingtons takes heavy losses.
December 26 - the first RAAF squadrons to join the war arrive in Britain
January 27 - Lockheed XP-38
March 31 - Miles Master production aircraft N7408
April 1 - Mitsubishi Zero
April 22 - Aeronautica Umbra Trojani AUT.18 M.M.363
May 7 - Petlyakov VI-100
May 14 - Short Stirling
June 1 - Focke-Wulf Fw 190
July 17 - Bristol Beaufighter prototype R2052
July 20 - Heinkel He 176, first aircraft powered by liquid-fuelled rocket
July 25 - Avro Manchester prototype L7246
August 13 - Vickers Warwick
August 27 - Heinkel He 178, first aircraft powered by turbojet
September 14 - Sikorsky VS-300, first helicopter to enter mass production.
September 24 - Handley Page Halifax H.P.57 prototype L7244
December 29 - Consolidated XB-24
Lockheed Hudson with No. 224 Squadron RAF
Bristol Beaufort with No. 22 Squadron RAF (Coastal Command)
Boulton Paul Defiant with No. 264 Squadron RAF