Originally Posted by
junior.VH-LFA
There are none. You can operate right up to the boundary.AIP ENR 1.1 2.1.2
Note 2: For aircraft operating in close proximity to an airspace boundary where there is a risk of an airspace infringement, the pilot in command should consider obtaining a clearance to enter the airspace or altering track to remain well clear.
There's absolutely nothing about not planning through CTA in AIP. Just don't enter it without a clearance.
That’s exactly what I said, junior.
The word “junior” in your handle is appropriate. It used to be the case that aircraft operating outside controlled airspace had to plan for tracks with specified margins to avoid the boundaries of controlled airspace. If my memory serves me correctly, it used to be something like 2nm for boundaries up to 2,000’, 4nm for boundaries up to 4,000’ and so on. But it’s now irrelevant, so I don’t care about it. Sunfish may be labouring under the misconception that those rules still apply. But thanks for your insights, junior.