"JPH" wrote in message
news:016Ue.2559$P34.221@okepread07...

So, you're reverting to timing anyway. The only difference is you start
your timing at a point other than the non-precision FAF and try to figure
it out as you go. (Let's see, I was passing 2650 when I lost the
glideslope a few seconds ago, the DH is 852, the glideslope is 2.8
degrees, I drop XXX amount of feet from here to there at a rate of XXX ft
per mile, so I'll cover that distance in XX minutes/seconds). Sounds like
it would be a whole lot simpler to start the timing at the non-precision
FAF than try to do those computations on the fly as you're starting to
climb as you're trying to figure if it's your equipment or the glideslope
failure.


I didn't say timing was wrong. I just responded to what Hilton wrote:

"Thirdly, as you point out, what the heck do you do (can you do) if you're
in
IMC on an ILS and your GS fails? You're screwed and only luck will save
your butt (it may be less dramatic when surrounded by flatter terrain)."

That just ain't so. You aren't screwed if you didn't punch the clock at the
FAF. There is another way determine (at least approximately) where the MAP
is.