can you descent on the GS(let's say 15 NM from the threshold) before minimum interception GS altitude?Let's say you've been cleared to certain point and to descent 6000',and also you got the clearance for straight in ILS approach.
Example:GS interception altitude is 3300' at 7 DME.On the approach plate your minimum flight altitude from the feeder route to a point you intercept the LOC is 5100 at 15 DME.Then you have a step down to 3300 until 7 DME.
So the ATC vector you for straight in approach and position you 25nm on the locolizer.then say xxx descent to 6000' by 1019,cleared straight in ils approach.
Can you arm the GS and start descent when you intercept the glide slope earlier or you have to descent to 3300' and then intercept it?
Sorry if this sounds like a non-sense to you you guys.It would have been much easier if I could show you the approach plate([SOFIA ILS rwy 27)but I don't know how to post it online.
