Comment on: "Both Dash 8 and Q400 produce noise above limits"
Mr. Iler,
How did the original Air Ontario - Jazz Dash 8s (100 & 300 series) get into the TCCA if their noise ratings are ABOVE the limits in the Tripartite Agreement?
Was averaging of the various noise ratings used back then? The answer may help explain why the Q400 has also been allowed to operate at the TCCA.
Also, some noise abatement procedures MAY have an impact on the NEF such as a steeper approach or departure angle as this keeps the aircraft noise closer to the airport - thus reducing the size of the footprint. London City airport uses a 5.5 degree approach angle to keep traffic higher until they are closer to the airport. I believe the Q400 is rated as being able to fly this type of approach profile.
As for Mr. Freeman's comment about our previous "slots" discussion - NOTHING is settled. When I see an OFFICIAL slot total based on an OFFICIAL and current NEF - I'll believe the numbers. To assess or pass judgment on speculative numbers only raises anxiety levels.
I think it was poor judgment on the TPA's part to leak speculative numbers to the public.
Let's wait for the real numbers to be presented and at that time, we'll also know if other limitations will take effect to compensate for the increase in large turboprop traffic. Given the way the NEF is calculated, I don't think it's a stretch to expect a reduction in "other" types of activities at the airport as compensation for the increase in commercial flights.
Take Care and Happy New Year.
Joe
How did the original Air Ontario - Jazz Dash 8s (100 & 300 series) get into the TCCA if their noise ratings are ABOVE the limits in the Tripartite Agreement?
Was averaging of the various noise ratings used back then? The answer may help explain why the Q400 has also been allowed to operate at the TCCA.
Also, some noise abatement procedures MAY have an impact on the NEF such as a steeper approach or departure angle as this keeps the aircraft noise closer to the airport - thus reducing the size of the footprint. London City airport uses a 5.5 degree approach angle to keep traffic higher until they are closer to the airport. I believe the Q400 is rated as being able to fly this type of approach profile.
As for Mr. Freeman's comment about our previous "slots" discussion - NOTHING is settled. When I see an OFFICIAL slot total based on an OFFICIAL and current NEF - I'll believe the numbers. To assess or pass judgment on speculative numbers only raises anxiety levels.
I think it was poor judgment on the TPA's part to leak speculative numbers to the public.
Let's wait for the real numbers to be presented and at that time, we'll also know if other limitations will take effect to compensate for the increase in large turboprop traffic. Given the way the NEF is calculated, I don't think it's a stretch to expect a reduction in "other" types of activities at the airport as compensation for the increase in commercial flights.
Take Care and Happy New Year.
Joe
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