Civil Aviation (Subsidies) Mr. Wigley asked the Secretary of State for Trade what is the total cost to central Government of subsidies paid towards the cost of civil aviation in Scotland. Mr. Tebbit Questions about subsidy for air services in Scotland should be addressed to my right hon. Friend the Secretary of State for Scotland; but the grant-in-aid to the Civil Aviation Authority is in part attributable to the losses sustained on its aerodromes in Scotland. In 1978–79 the operating loss was £1,964,000 and the interest payable was £1,123,000.