This SAE Aerospace Information Report (AIR) provides descriptions of test methods for determining if an aircraft surface coating of any thickness has adverse effects on aircraft deicing/anti-icing fluids with respect to fluid holdover time performance and aerodynamic performance. Although not the primary mandate of the G-12 Aircraft Ground Deicing Committee@ this document also provides descriptions of suggested test methods for evaluating aircraft surface coatings with respect to durability@ hardness@ weathering@ aerodynamic drag@ ice adhesion@ ice accumulation@ contact angle@ and thermal conductivity. These additional tests can provide informational data for characterizing the coatings and may be useful to operators when evaluating the coatings. Purpose To provide a reference method for evaluating the interaction of aircraft surface coatings with respect to aircraft deicing/anti-icing fluid holdover time performance and aerodynamic performance. To provide additional informational test methods that can be used for characterizing the aircraft surface coatings.