Re: Protruding "Fin" Marked HOT on A300

Organization: America Online, Inc. (1-800-827-6364)
Date:         19 Mar 96 00:44:06 
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I'm an aircraft tech. This is a overboard water drain for the lav sink
and galley drain. The purpose of heating this drain is to prevent ice from
forming.  It is heated electrically. Most of these types of drains are
turned on and off via a switch that sences when the aircraft is on the
ground or in the air.