3/ When was the Air Registration Board abolished?
The Air Registration Board was incorporated into the Civil Aviation Authority in 1972. The CAA was established in 1972, under the terms of the Civil Aviation Act 1971, following the recommendations of a government committee chaired by Sir Ronald Edwards. The CAA has been a public corporation of the Department for Transport since then. D P Davies remained as Chief Test Pilot until he retired in the late 1970s.