Question to pilots who have landed on airports using ILS

Hi!

In IFR flights rotorcraft are sequenced together with airplanes on the
approach path, i.e. they use the same procedures as airplanes. Because
they are much slower than aircraft, they hinder the traffic flow. To
alleviate airport congestion they could intercept the glide path nearer
to the runway threshold.

Now the question to you pilots: What would be the minimum safe distance
(from intercept point to runway threshold) for a helicopter to intercept
the ILS glide path and land on an airport? What would you guess?

Thnaks, Ingo