Type 113 Vespa Mk.I
Type 119 Vespa Mk.II
Type 149 Vespa Mk.III
Type 193 Vespa Mk.IV
Type 208 Vespa Mk.V
Type 210 Vespa Mk.VI
Type 250 Vespa Mk.VII
The aircraft above was originally built in 1925 as the Vespa Mk.I and registrated G-EBLD, subsequently it was modified to the Vespa Mk.II, after the next modification it was redesignated Vespa Mk.VI, but also reregistered as G-ABIL.
The last modification was in 1932, when the aircraft was selected to capture the world's height record. The Vespa had been selected for this effort, as it was the only aircraft available at that time with the required wing area and high-lift capability at height. It was fitted with a supercharged Bristol Pegasus S.3 nine-cylinder radial engine driving a large-diameter propeller. Due to the modifications the aircraft was operating without a valid CofA and therefore carrying the 'Class B' marking O-5.
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In May 1933 the Vespa Mk.VII was sold to the Air Ministry and serialed K3588 it was used by the RAE for high-altitude research with supercharged engines and variablepitch propellers."