§ 79. Mr. Onslowasked the Minister of Technology what research has been carried out by his Department during the past three years into the noise reduction problems of light aircraft and helicopters; and at what cost.
§ Mr. J. P. W. MallalieuIn the last three financial years the Government and the industry have together spent about £1½million on noise research. The share attributable to light aircraft and helicopters cannot be separately costed.