Topcoat
Topcoat means a coating that is applied over a primer on an aerospace vehicle or component for appearance, identification, camouflage, or protection. Coatings that are defined as specialty coatings are not included under this definition.
Source
40 CFR § 63.742
Scoping language
Terms used in this subpart are defined in the Act, in subpart A of this part, or in this section as follows: