HC Deb 22 October 1973 vol 861 c364W
Sir John Hall

asked the Secretary of State for Trade and Industry what percentage of aircraft using Heathrow in 1972 operated on below 50 per cent. capacity.

Mr. Onslow

My Department does not have this information. Nor, I understand, could the Civil Aviation Authority or British Airports Authority provide it without disproportionate effort.