§ Mr. Adleyasked the Secretary of State for Trade and Industry if he will state the latest measurement of noise, at the statutory measuring points, on take-off, flyover, and landing, approach, of the following aircraft, namely, Boeing 707–320C, Douglas DC8–50 and production Concorde.
§ Mr. OnslowNo measurements have been made of the noise levels of these aircraft under the requirements of the United Kingdom noise certification scheme. The latest estimated values under these conditions for the American aircraft are shown in the table below, together with the manufacturers' estimates of production Concorde noise levels:
Take-Off Approach (Flyover) EPNdB DC8–50(JT3D) 115 116 DC8–50 (JT3D-3) 115 116 DC8–50 (JT3D-3B) 114 118 Boeing 707–320C 114 120 Concorde 114 115