RTCA DO-160 – Section 12.0 – Sand and Dust
This test determines the resistance of the equipment to the effects of blowing sand and dust where carried by air movement at moderate speeds. The main adverse effects to be anticipated are:
Penetration into cracks, crevices, bearings and joints, causing fouling and/or clogging of moving parts, relays, filters, etc.
Formation of electrically conductive bridges.
Action as nucleus for the collection of water vapor, including secondary effects of possible corrosion.
Pollution of fluids.
DO-160 is a standard for environmental test on avionics equipment published by RTCA, the Radio Technical Commission for Aeronautics. The DO 160 G was amended and now all guideline inside it are replaced by the DO 357.