The Halton Mayfly was a British

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 two-seat biplane

Biplane

A biplane is a fixed-wing aircraft with two superimposed main wings. The Wright brothers' Wright Flyer used a biplane design, as did most aircraft in the early years of aviation. While a biplane wing structure has a structural advantage, it produces more drag than a similar monoplane wing...

 designed by C.H. Latimer-Needham

C.H. Latimer-Needham

Cecil Hugh Latimer-Needham was a British aircraft designer, inventor and aviation author. He is best remembered for the series of aircraft he designed for the Luton Aircraft company and his invention of the Hovercraft skirt for which he was granted a patent...

 and built by the Halton Aero Club between 1926 and 1927. Registered

Aircraft registration

An aircraft registration is a unique alphanumeric string that identifies a civil aircraft, in similar fashion to a licence plate on an automobile...

 G-EBOO and named the HAC.1 Mayfly it first flew on the 31 January 1927. It was converted to a single-seater and was flown in a number of air races including the King's Cup Race

King's Cup Race

The King's Cup Race is an annual British handicapped cross-country air race, first contested on 8 September 1922. The event was open to British pilots only, but that did include members of the Commonwealth....

. It was entered in the 1926 Lympne light aircraft trials

Lympne light aircraft trials

The Lympne Light Aircraft Trials were held to encourage the development of practical light aircraft for private ownership, with a strong but not exclusive emphasis on fuel economy. They were held in 1923, 1924 and 1926. Each year saw different restrictions on engine size, framed initially in terms...

 as No. 8 but failed to turn up in time for the elimination trials.

By 1928 the aircraft had been converted from a biplane to a parasol monoplane and was renamed the Halton HAC.2 Minus. It again was used for air racing being entered in the 1928 and 1928 King's Cup Races

King's Cup Race

The King's Cup Race is an annual British handicapped cross-country air race, first contested on 8 September 1922. The event was open to British pilots only, but that did include members of the Commonwealth....

. The aircraft was dismantled at Halton in 1930.

Variants

HAC.1 Mayfly

Two-seat then single seat biplane powered by a Bristol Cherub III

Bristol Cherub

-See also:-Bibliography:* Guttery, T.E. The Shuttleworth Collection. London: Wm. Carling & Co, 1969. ISBN 901319-01-5* Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6....

 engine.

HAC.2 Minus

The Mayfly converted into a parasol monoplane.

Specifications (Mayfly)