Mr. Iler mentioned that the Q400 exceeds noise levels set out in the TRI Partite agreement but in another blog, explains that "The Toronto Port Authority’s noise consultants finally admitted the Q400 breaches of the noise limits (we’ve been asking for an answer for many months) but came up with an argument that rules allow the breaches to be averaged."

Is this explanation sufficient? Does the TRI agreement in fact allow "averaging"? If so, wouldn't this make any further references to Q400 excessive noise pointless?

If averaging is NOT allowed, then why can't the mayor act on this issue alone?

With respect to the Q400 not being a Dash 8, I accept that my interpretation may have been simplistic and administrative but, it also appears that my interpretation seems to be the one that Transport Canada and the TPA agree with. (OPINION) I don't think the TRI agreement was designed to take into account what variants of aircraft would surface 20 years later. If anything, the TRI agreement should be updated to include the Q400 since that aircraft has clearly demonstrated the ability to safely operate at the TCCA. If the NEF can be updated, shouldn't the allowable aircraft list reflect a realistic depiction of the traffic currently using the airport?

In both of these cases (excessive noise and actual designation of the Q400) the Community Air arguments have some validity but there is sufficient ambiguity that is likely preventing any action from the mayor.

Take Care!
Joe