Originally Posted by
Lead Balloon
It also says the “wake turbulence standard of 1,000FT vertical separation from heavy aircraft may not always be achievable” when flying in V1
There is a big difference between "may not always be achievable" and nonexistent. "May not always be achievable" means the separation is usually there, but might be infringed in some circumstances. In Melbourne 1000 ft separation is not there - the separation designed in is 500 ft.
Originally Posted by
Lead Balloon
I have never experienced wake turbulence in V1 when flying under heavy aircraft flying into or out of YSSY.
That is what you would expect with clearance of 1000 feet and the wake descending less than 1000 feet. If you do hit the wake, be prepared for it to be violent - nothing like the wake of a smaller aircraft. Crossing at right angles it won't be a rolling action, it will be positive and/or negative Gs.