|Posted by Ian Thurston on June 14, 2018 at 5:10 AM|
Notice of Major Development Plan
A notice of public consultation about a proposed second runway for Perth Airport was delivered to post boxes in Banjup in the week of 11 June 2018; you can download a copy here. Public comment on the proposal closes on 24 August 2018.
The second runway will run 2 km east of and parallel to the existing main runway, as shown in the project summary booklet:
Perth Airport expects the new runway will become operational some time between 2023 and 2025, depending on regulatory approval. The project summary booklet implies that Airservices Australia will begin design work on new flight paths for the runways in 2020.
For Banjup, Jandakot, and Treeby, the main consideration arising from the second runway will be its impacts on flight paths and the associated noise nuisance. Until Airservices publishes its proposals, say in 2021 or 2022, we can only guess at what the impacts might be. With that clearly in mind, what follows is possible:
When winds are blowing from the west, aircraft approach the main Perth airport runway from the north north east but when winds blow from the east aircraft approach from the south south west, which is why we see more aircraft over our area in the summer, when easterlies prevail.
Aircraft must approach Perth airport runways along fixed ‘glide paths’ that are 3° to the ground and in a direct line to the landing runway. Aircraft enter the glide path at an altitude of 1,000 metres, which implies they must be 19 km from touch down. In the south, this is at Hebe Road.
To line up to begin the glide path at Hebe Road, jets arriving from the east track along Gibbs Road and those from the west track along Russell Road before turning north over Banjup.
Perth airport’s second runway will be 2 km to the east of the existing main runway. If the glide path is similar to the current glide path, then it will be 2 km east of Hebe Road and begin about 2 km north of the intersection of Armadale and Nicholson Roads. Aircraft will likely approach over Rowley Road and turn north over Nicholson Road. The map below illustrates the possible flight paths over our area:
All this likely means that the noise nuisance from aircraft using the second runway will have little impact on our area.
However, the second runway could be of some benefit to our area. In 2017, there were 131,000 movements at Perth airport. By 2025, there will be 172,000 movements. If those movements are split evenly between the 2 main runways and their glide paths, then each would carry 86,000 movements. Hence, Banjup, Jandakot, and Treeby would have about a third less aircraft flying over us.
Your Committee welcomes your thoughts as to the implications for our area.
Categories: Aircraft Noise