§ 68. Mr. Hayhoeasked the Secretary of State for Trade and Industry what facilities are available or planned for monitoring the noise levels of aircraft landing at London Heathrow Airport.
§ Mr. NobleNone. No purpose would be served by such monitoring. It is neither practical nor safe to require aircraft landing at Heathrow to comply with maximum noise levels.
§ Mr. Hayhoeasked the Secretary of State for Trade and Industry what is his estimate of the capital and revenue costs of monitoring the noise levels of all and of 10 per cent. of the aircraft landing at London Heathrow Airport, respectively.
§ Mr. NobleCosts would depend upon the number and location of sites needed for adequate coverage of whatever area was selected for such hypothetical monitoring below the glide path, which aircraft must join at least 7 nautical miles from the runway.
§ Mr. Hayhoeasked the Secretary of State for Trade and Industry how often the regulations governing the ground running of jet engines at night have been broken this year; and what action has been taken against those responsible.
§ Mr. NobleMy information is limited to Heathrow where one possible infringement occurred, and to Gatwick where four minor infringements were recorded. Those responsible were admonished and cautioned against a repetition.