Hilton wrote:



Firstly, please note that after the word "butt", I had "(it may be less
dramatic when surrounded by flatter terrain)." So, we're assuming
mountainous terrain or other nearby obstacles.

When would you start flying the missed?
How would you start flying the missed?
Are you guaranteed to be flying the missed approach as published?

You start climbing when the G/S fails. That is flying the missed even
though you have not reached the MAP (DA point with ILS)

If the missed approach track is straight ahead you are home free.
If the missed approach is a track reversal back to the LOM or a VOR
behind you, you are also home free because all the airspace is protected
from the P-FAF to the DA point (plus 1.5 miles after that) on the turn side.

If the turn is less than a 180 (or thereabouts) then the simple math
Stephen suggests will get you well within protected missed approach
airspace.

And, who knows, you might be at a location where ATC can help you with
radar. ;-)

This is the 21st Century, so anybody who doesn't have GPS to preempt
these types of "1950s" problems probably needs to find another, safer
hobby. ;-)