SAE ARP987B-2010 PDF

Scope: This Aerospace Recommended Practice (ARP) outlines the causes and impacts of moisture and/or condensation in avionics equipment and provides recommendations for corrective and preventative action. Purpose The purpose of this document is threefold: (1) to review the issues associated with moisture in avionics equipment@ (2) to outline methods for correcting conditions of excess moisture in existing avionics installations@ and (3) to recommend design practices for new avionics cooling system installations which will minimize the occurrences of excess moisture in avionics. This document does not address all moisture-related requirements which may be applicable to the avionics installation. For instance@ when the air conditioning system is inoperative when the aircraft is parked or stored@ or if an avionics ground cooling fan is employed@ the aircraft and its equipment will be exposed to and must withstand the effects of the outdoor environment (e.g.@ high humidity@ fog@ rain@ and surface condensation). Field of Application This document is intended to apply to design of airborne avionics equipment cooling systems.

SAE ARP987B-2010 history