1927 in aviation

January
January 7 - Imperial Airways commences a regular service from Basra to Cairo via Baghdad, the first of its Empire "trunk routes"

January 15 - Boeing Air Transport is formed, to carry airmail between Chicago and San Francisco. This will eventually become United Airlines

March
March 14 - Pan American Airways is formed to carry airmail on the Key West-Havana route.

May
May 1 - Imperial Airways introduces its luxury "Silver Wing" service between London and Paris.
May 8-9 - Charles Nungesser and François Coli attempted to cross the Atlantic from Paris to the USA in Levasseur PL-8 The White Bird (L'Oiseau Blanc) biplane, but were lost.

May 20-21 - Charles Lindbergh flies The Spirit of St. Louis across the Atlantic nonstop and solo, direct from New York City to Paris, as a first solo transatlantic flight.

May 20 - Flt Lt Roderic Carr sets out to set a new distance record, attempting to fly from England to India in a Hawker Horsely. Three days later, he will be rescued from the Persian Gulf.

May 27 - France's first aircraft carrier, the Bearn is commissioned

June
June 4-6 - With Charles A. Levine as his passenger, Clarence Duncan Chamberlin‎ made a record nonstop transatlantic flight, in his monoplane Columbia, from Roosevelt Field, Long Island to Eisleben, Germany, a distance of 3,911 miles, in 42 hours and 31 minutes.

June 5 - the Verein für Raumschiffahrt ("Society for spaceship travel") is formed in Germany.

June 6 - Canadian innovator Wallace Turnbull sells the parent of the variable-pitch propeller to Curtiss-Wright in the United States and Bristol in the United Kingdom. It will be successfully flight tested on June 29.

June 15 - US businessman Van Lear Black charters a KLM Fokker F.VIIa for a flight from the Netherlands to Batavia, the first international charter flight.

June 28-29 - a US Army Fokker C-2 makes the first non-stop flight from the continental US to Hawaii.

June 29 - July 1 - Richard Evelyn Byrd with crew flies Fokker F.VIIa/3m "America" from New York City to France.

July
July 17 - USMC de Havilland DH.4s are used to attack bandits in Nicaragua threatening the garrison at Ocotal.

August
August 12 - the Royal Air Force holds a fly-off between four competing flying boat designs, the Supermarine Southampton, Blackburn Iris, Short Singapore, and the Saunders-Roe Valkyrie.

August 26 - Bert Hinkler sets a new non-stop distance record, flying from Croydon, England to Riga, Latvia.

September
September 8 - the Cessna company is established.

September 26 - Schneider Trophy race flown at Venice, Italy. Won by Flight Lt. S.N Webster (UK) in a Supermarine S5 at 453.2 km/h (281.7mph).

September 28 - Lt Dick Bently of the South African Air Force arrives in South Africa after having made the first solo flight there from England. He left London on September 1.

October
October 14-15 - Dieudonne Costes and Joseph le Brix make the first non-stop aerial crossing of the South Atlantic, flying a Breguet 19 from Saint-Louis, Senegal to Port Natal in Brazil, as a part of their round-the-world 57,000 km trip .

November
November 16 - US aircraft carrier USS Saratoga is commissioned.

November 17 - Sir Alan Cobham sets out from England in a Short Singapore to make an aerial survey of Africa.

December
December 14 - US aircraft carrier USS Lexington is commissioned.

December 29 - Georg Wulf, co-founder of Focke-Wulf, is killed in the crash of the Focke-Wulf Fw 19

First flights

Hamilton H-47, first US all-metal aircraft
Nieuport-Delage Ni-D 52

March
March 7 - Westland Wapiti
March 26 - Handley Page Hinaidi

April
April 27 - Stinson Detroiter

May
May 12 - Armstrong Whitworth Starling
May 17 - Bristol Bulldog

July
July 4 - Lockheed Vega