The measurement and prediction of atmospheric corrosivity is an important element for determining the risk of corrosion damage to aircraft. Together with smart structure-type corrosion sensors, the prediction of atmospheric corrosivity is integral to an idealized aircraft corrosion surveillance strategy. A comprehensive methodology for predicting corrosivity based on atmospheric parameters, developed by ISO, has been utilized for the Canadian maritime Greenwood and inland
Trenton bases. Evidence is presented that the important parameters affecting atmospheric corrosivity fluctuate significantly with time. In order to optimize corrosion control efforts, this time variability should be to be taken into account for procedures such as aircraft washing, the application of corrosion inhibitors, aircraft storage and dehumidification. The measurement of critical parameters for predicting the corrosion risk to aircraft requires simple practical procedures.
Keywords: aircraft corrosion, prediction, atmospheric corrosivity, time of wetness, chlorides