loss of glideslope

Date:         17 Mar 99 01:24:57 
From:         David =?iso-8859-1?Q?Lyb=E4ck?= <d88-dly@dsv.su.se>
Organization: KTH-D
References:   1 2
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I wonder how often it happens (e.g. during heavy precip., esp. snow),
that you loose glideslope indication during approach.

It must be a rather difficult mental switch to suddenly start using
other mean of navigation during approach; can you actually continue with
only localizer, dist., and radar alt, and make a cat i-iii without
glideslope ?