826. Environmental cases.

826.     Environmental cases.

The Civil Aviation Authority ('CAA')1 may receive an environmental application or make an environmental proposal for the grant or variation of an air transport or route licence2, being a licence which authorises, or which if granted would authorise, the holder to operate either a helicopter under 3,000 feet above the surface for the greater part of the distance which it flies over land or any aircraft the operation of which, in the opinion of the CAA, will or may cause an exceptional amount of noise, vibration, pollution or other disturbance3. The