Absolutely. There's a lot there.
I think your first question was whether I concur with your observations. Absolutely. What you're describing isn't unique to Calgary. It's what we're seeing at most major airports, especially the airports that are near urban centres. Also, some of the comments are very common to airports that have experienced flight path changes. Toronto Pearson also went through the same thing in 2012, and a lot of the discussions and community concerns are still tied to those flight path changes.
There are solutions. Some are better than others. Some solutions deal with how the aircraft are handled and how they are put on approach. In other words, they deal with the airspace design. Pearson is looking at some changes despite the fact that they did an airspace redesign in 2012. An example that is possible at some airports is continuous descent, where the aircraft would start descending well before they're even near the airport. In doing so, it's almost like a glide down to the airport. They don't have to use flaps which create a lot of noise. They don't have to adjust their position by adding thrust, etc., which also creates a lot of noise. However, this technique isn't possible at all airports. It depends on where the traffic is coming from and which way the runways are oriented.
One of the things that we're advocating, as part of the challenge, is that we have to deal with it at the receiver as well. There are a lot of questions and studies being done, particularly in Europe, in terms of the health effects from this noise. Let me be clear that when I say “the health effects”, it's not the noise itself that's causing you to have high blood pressure or cardiovascular effects; it's the annoyance and the tension associated with being exposed to this aircraft noise. That's why it differs so much from person to person, where you—