The Andover was developed from the Avro 748 airliner to meet the requirement for Short Take-off & Landing (STOL) transport aircraft to operate in the trooping, paratrooping, airdropping, freighting and casevac roles. The modified aircraft incorporates a hydraulic kneeling arrangement in the main undercarriage to allow the rear loading door to adjust to any truckbed height.
The aircraft is powered by two Rolls-Royce Dart engines. It has an operational range of 602km (374miles) with a maximum payload of 6691kg (14750lbs) of freight. It has a maximum speed of 512kph (320mph) at 4572m (15000ft).
The aircraft displayed was one of seven modified from the basic CMkI aircraft for use in navaid calibration.
The first Andover flew in July 1965 and a total of 31 were built.