Question: Aircraft Door Type Designations

Date:         21 Mar 97 02:43:25 
From: (JAK1959)
Organization: AOL
References:   1
Followups:    1
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Could anyone please inform me how aircraft doors are type designated?  ie,
type 1 and 2.  What are standard doors (ie, Airbus & Boeing) that are
hinged designated as?  Are McDonnell Douglas and Lockheed doors that slide
up into the aircraft designated differently?  I imagine that the
designation has to do with the width of the door regarding aircraft egress
and galley access doors would have a different type designation as they
are smaller.  I would welcome being educated as to how the doors are
designated and would like to know if these are manufacturers' designations
or regulatory agencies' designations.  Thank-you.

James Keane