Various aspects of the Aerovan's configuration could be adjusted to meet customer demand; such alterations included the addition of skis for operations within snowy climates. The standard Aerovan was powered by a pair of Blackburn Cirrus Major piston engines; alternative powerplants included the de Havilland Gipsy Major and the Lycoming O-435, often necessitating the use of enlarged fins and rudders to cope with the increased power under all circumstances. By swapping the engines, the maximum speed could be increased by up to 20 mph and the rate of climb by up to 50 per cent.