Captain Sir John William Alcock KBE DSC (5 November 1892 – 18 December 1919) was a Captain in the Royal Air Force who, together with navigator Lieutenant Arthur Whitten Brown, piloted the first non-stop transatlantic flight from St. John's, Newfoundland to Clifden, Connemara, Ireland. He was killed in a flying accident in France in 1919.

John Alcock was born on 5 November 1892 at Seymour Grove, Stretford, England. He attended St Thomas's primary school in Heaton Chapel, Stockport. He first became interested in flying at the age of 17. His first job was at the Empress Motor Works in Manchester. In 1910 he became an assistant to Works Manager Charles Fletcher, an early Manchester aviator and Norman Crossland, a motor engineer and founder of Manchester Aero Club. It was during this period that Alcock met the Frenchman Maurice Ducrocq who was both a demonstration pilot and UK sales representative for aero engines made by the Italian Spirito Mario Viale.

Ducrocq took Alcock on as a mechanic at the Brooklands aerodrome, Surrey, where he learned to fly at Ducrocq's flying school, gaining his pilot's licence there in November 1912. Alcock then joined the Sunbeam Car Company as a racing pilot. By summer 1914 he was proficient enough to compete in a Hendon-Birmingham-Manchester and return air race, flying a Farman biplane. He landed at Trafford Park Aerodrome and flew back to Hendon the same day.

Military career

At the outbreak of World War I, Alcock joined the Royal Naval Air Service as a Warrant-Officer instructor at the Royal Naval Flying School at Eastchurch in Kent. It was whilst at Eastchurch that Alcock received his commission as a Flight Sub-Lieutenant in December 1915. In 1916 he was transferred to a squadron operating at Moudros, on the Greek island of Lemnos. While stationed at Moudros he conceived and built the Alcock Scout, a fighter aircraft built out of the remnants of unused and abandoned aircraft.

On 30 September 1917, whilst piloting a Sopwith Camel Alcock attacked three enemy aircraft, forcing two to crash into the sea. For this action he was awarded the Distinguished Service Cross. After returning to base he then piloted a Handley Page bomber on a raid to Constantinople. He was forced to turn back for base after one of his engines failed near Gallipoli. After flying on the single engine for over 60 miles, that engine also failed and the aircraft had to ditch in the sea, near Suvla Bay. Alcock and his crew of two were unable to attract nearby British destroyers, and when the plane finally began to sink they swam an hour to reach the enemy-held shore. All three were taken prisoner next day by the Turkish forces. Alcock remained a prisoner of war until the Armistice and retired from the Royal Air Force in March 1919.

First non-stop flight across the Atlantic

After the war, Alcock took up the challenge of attempting to be the first to fly directly across the Atlantic. Alcock and Arthur Whitten Brown took off from St John's, Newfoundland, at 1:45 pm local time on 14 June 1919, and landed in Derrygimla bog near Clifden, Ireland, 16 hours and 12 minutes later on 15 June 1919 after flying 1,980 mi (3,190 km). The flight had been much affected by bad weather, making accurate navigation difficult; the intrepid duo also had to cope with turbulence, instrument failure and ice on the wings. The flight was made in a modified Vickers Vimy bomber, and won a £10,000 prize offered by London's Daily Mail newspaper for the first non-stop flight across the Atlantic.

A few days after the flight both Alcock and Brown were honoured with a reception at Windsor Castle during which King George V knighted them and invested them with their insignia as Knight Commanders of the Order of the British Empire.

Alcock was present at the Science Museum in London on 15 December 1919 when the recovered Vimy aircraft was presented to the nation.

Death

On 18 December 1919, Alcock was piloting a new Vickers amphibious aircraft, the Vickers Viking, to the first post-war aeronautical exhibition in Paris when he crashed in fog at Cottévrard, near Rouen in Normandy. Alcock suffered a fractured skull and never regained consciousness after being transferred to a hospital in Rouen.

His grave in Southern Cemetery, Manchester is marked by a large stone memorial.