Protruding "Fin" Marked HOT on A300

From:         pdaniel@ice.net.au (Paul Daniel)
Organization: Prologic Pty Ltd
Date:         07 Mar 96 02:04:39 
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Can anyone satisfy my curiosity please.

I was looking at a QANTAS A300 the other day and notice what I'd
describe as a type of fin protruding from the fuselage behind the
forward cargo door. Can someone tell me what this is please and why it
was coloured with orange stripes and marked HOT. What makes it hot?

Paul Daniel (pdaniel@ice.net.au)
New Norfolk
Tasmania Australia