> documentation doesn't say so, but, i've been told they are. would like
> to know before attempting. thanks
"docmentation doesn't say so" - well don't then. Cisco docs are
very rarely wrong. Especially about something like that.
They are though [hot swappable] so clearly you haven't
looked very much.
e.g.
Search of
www.cisco.com for [pa hot swap] - top hit says:
PA-A3 is hot swappable on Cisco 7200 routers
I suggest that you check the docs for your particular PA
and 7200 model.
HINT - search with the part number.
This though is not something that I would plan to do in production.
I have done a bit of lab work and I have seen a few reboots on
a hot swap. This was mostly on various Catalysts but I think that
I have seen reloads on 7500s too.
If you REALLY have to, shut down the interfaces on the PA first,
stick your fingers in your ears and if possible get someone else
to do the dirty deed

Take care to insert and remove cleanly,
i.e don't leave it half in and half out of the connector while you
go for a cup of tea. Plan for it going horribly wrong. Well, a reload
anyway.
If you have never inserted a PA into a 7200 before, maybe this
is not the best one to practise with. They do go in OK but it is not
exactly as easy as changing a light bulb.