§ Mr. Hugh Jenkinsasked the Secretary of State for Trade and Industry whether he will now adopt the practice of monitoring aircraft landings at Heathrow.
§ Mr. NobleNoise on landing is an inescapable function of height because aircraft must, for safety reasons, keep to the glide slope and engine power must he regulated accordingly. Monitoring for height purposes is, however, done on a random basis and the results are published. There are few deviations.