The Avro 707, was the first British aircraft with a delta-wing – a research aircraft to prove the concept of delta wings for the 3 times as large Avro Vulcan that was to follow.
The first Type 707 aircraft (serial VX784) made its maiden flight on 4 September 1949 at Boscombe Down. Tragically, test pilot Eric Esler lost control of the aircraft at low speed on 31st September and fatally crashed near Blackbushe.
The loss of the first prototype resulted in work on the second Type 707 aircraft being suspended for a time, until a number of modifications were introduced to save time and simplify the construction. The long pointed nose section intended for the Type 707A was grafted onto the fuselage, resulting in the new aircraft being 12 ft (3.66 m) longer than the original. Redesignated Type 707B (serial VX790), the maiden flight took place at Boscombe Down on 5 September 1950.
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