Having lived under an airport flight path myself for many years, I certainly understand how the communities feel. Just as a starting point, one thing I will point out is that I lived under the departure end of runway 20 in Calgary, and compared to 20 years ago, the noise has almost disappeared.
Communities can and should have a say in the system as well, but we obviously have to find some impartial way of determining what is the right balance, looking at the efficiencies and the investment versus the requirements to keep an arrival rate up to maintain an efficiency coming into an airport and to continue to provide Canadians with the travel that they expect.