我去空管局的网站上看了一下，其实Riversea上面有很多的飞机通过，但没有人投诉，因为飞机高度高。
因为飞机汽车噪音是点音源，球面波声音强度与距离的平方成反比。
我所收到的电邮说这个方案对Canning Vale相对有利，现把它贴上来。
What is changing:
1. We will as SNAG neighbourhoods all have a night time-curfew from 10 pm to 5 am. This concerns only 7-9 planes but they come at a horrible moment of the night, and I have had a large number of emails of people who were extremely happy about this. ASA has made this as a promise to us, at the same time where the curfew in Sydney and Adelaide will be lifted, so I think this is a major step forward. Had we not pushed this, we would have seen an ever growing number of planes each night, and as you will notice, from 1 may the largest plane in the world, the Airbus 380, will leave at 10.10 pm from the airport. I am sure that will be noisy. The planes will now follow a slightly left turn from the airport, going over industrial areas and then go straight over Jandakot airport. This can be done, as there is hardly any airtraffic at Jandakot at night. We may be freed of 7-9 nightplanes now, but in 5 years it would have been more than doubled, but our night rest remains guaranteed.
ASA has the legal duty to inform those who are affected (a small part of Canning Vale) first, and they may protest, but the trial of 12 months will start between august and november and in similar situations in the past, neighjbourhoods have never been able to reverse the decision. Especially in this case it will be impossible since Canning Vale is profiting from a new rule that they will be freed of 1100 landing planes per year that fly at 1500 feet. By the time the nightplanes have reached Canning Vale they are at 7000 feet !
Some people complain 7-9 planes is not much, but remember it are the nightplanes. Were it planes in the middle of the day I would agree. From the begiining we have asked for a curfew, and we got it.
2.We had many planes over the SNAG neighbourhood at any time of the day, especially between 5 and 7 am, because runway 21 over us was the ‘preferred runway’. As you know, planes start and land against the wind, but they tolerate a little bit of tailwind, say 5 knots as in internationally accepted. Air traffic control looks at 4:30 am where the wind comes from. Is that from the south, they will send them over us. Is that from the nort, or north west or north east and is less than 5 knots, they will also send them over us, as we are the preferred runway.
What changed : Runway 21 is from May 1 no longer the preferred runway. I think a lot of people did not really understand what that means. If at 4:30 it is windstill, ATC can send down the planes south or north, at their choice. However, if there is only a SLIGHT breeze from the north, they will now go out north, whereas in the past we would have had them over us. We will have to start counting from May 1 what a difference this makes, but when it was trialled a few weeks ago, i was quite positively surprised that more planes went out north.
That this is something good for us, is proven by the fact that Guildford residents are protesting loudly, as they have noticed the difference. However, in contrast to my number 1 above, there is no trial for this, as the decision has been taken. Guildford is under a flightpath that has always been there and for every plane that starts their way, they will miss a landing plane. Apart from that, Guildford can look forward to reducing the number of planes with 50% once the new runway is made.
The brochure mentioned that there will be no change in policy for flights between 5 and 9 am. This does not mean that they will all send them over us, but that once a certain direction of flying ios tarted at 5 am, there can be no change till 9 am. Depending on the wind this is good or bad for us. This week there was a slight northerly, so all planes at 5 am left north. Just before 6 the wind turned south, so they should have come over us. However, following the rules, no change in direction was made and the planes kept leaving north. This is because between 5 and 9 an enormous number of planes are lining up, like on the freeway for take-off. If you then change the departure direction, these planes would need a reverse gear to have the whole queue lined up drive backwards and taxi to the end of the runway.
Obviously, if the wind at 5 am is from the south, the planes will start to the south and keep doing so till 9 am.
The Noise Ombudsman has vehemently opposed using RWY 24 over Belmont as departure as houses are only 900 m from the airport whereas our runway (Queens Park) has houses at 3.5 km from the runway. I disagree with that viewpoint, but ASA and ANO are firm on that.
So: we will have no more planes between 10 pm and 5 am from August or November and we will have many more planes going out north at any time of the day as our runway is no longer the preferred runway.
I have said in the thankword to ASA and ANO that our action would not stop here, and they know that and there will be further improvements as we go, they have promised.
i was just slightly disappointed by some members who wrote me that they are totally dissatisfied and who quite agressively wrote to ASA, which is always counterproductive. One should realise that the SNAG neighbourhoods have allowed this all to happen between 2007 and 2014, which is when we all started our action. 12 months into the resistance we have already this first succes.
I call that a winning strategy. Sorry if you disagree. Things never happen overnight, especially not in the world of airports, airplanes etc.
I have attached the flyer that was distributed on the evening itself |
楼主: 法比加斯
发表于 13-3-2015 10:32:31
发表于 13-3-2015 10:44:32
楼主
