§ Mr. Adleyasked the Secretary of State for Trade and Industry if he will state in statistical form the measurable smoke emission from the following aircraft, namely, Boeing 707, Boeing 727, Douglas DC8, VC10 and production Concorde.
§ Mr. OnslowSmoke emissions from the engines of these aircraft, measured in Hartridge smoke units, are as follows:
approximately Boeing 707 6 Douglas DC8 Boeine 727 13 Boeing 727 (with modified engine) 3 VC10 9 Concorde (production engine) 2