HC Deb 10 November 1969 vol 791 cc19-20W
72. Mr. Onslow

asked the President of the Board of Trade what checks are made on the altitude of aircraft taking off from London Airport, Heathrow.

Mr. Goronwy Roberts

There are no standing arrangements to check the heights of aircraft after take-off from Heathrow, but Air Traffic Control maintains radio contact with pilots during this procedure from whom height information is obtained when necessary.