Ron Rosenfeld writes:

A few comments because I don't understand what you say they told
you.

First of all, the GS altitude varies, so what does it mean for it to
be at an a 100' interval?

Second, the OM doesn't have a whole lot to do with an ILS. It's a
place where you can check your altitude, but it's not the FAF.

He clarified later in his posting that it applied to the LOC-only
approaches, where the outer marker is (probably) the FAF. The first
part of the posting was confusing, because he did seem to be
discussing ILS approaches.

Personally, I'd be pretty nervous flying an ILS approach below
non-precision minima if I didn't have some identifiable location that
I could check my altimeter on the glidepath, but I don't know if
there's any regulation requiring that either in Canada or the U.S.
Then again, I don't claim to be speaking from extensive experience --
my rating is very new, and I've never done an approach with a ceiling
below 400 ft.


All the best,


David