RTCA DO-160 – Section 14.0 – Salt Fog
This test determines the effects on the equipment of prolonged exposure to a salt atmosphere or to salt fog experienced in normal operations.
The main adverse effects to be anticipated are:
Corrosion of metals.
Clogging or binding of moving parts as a result of salt deposits.
Damage to contacts and uncoated wiring.
The apparatus used in the salt fog test shall include the following:
Exposure chamber with racks for supporting test items.
A salt solution reservoir with means for maintaining an adequate level of solution.
A means for atomizing the salt solution, including suitable nozzles and compressed air supply.
A means of heating and controlling chamber temperature.
A means for humidifying the air at temperatures above the chamber temperature.
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.