35 Ill. Adm. Code 211.280
Aerospace Primer
Section
211.280 Aerospace Primer
"Aerospace
primer" means the first layer and any subsequent layers of identically
formulated coating applied to the surface of an aerospace vehicle or
component. Primers are typically used for corrosion prevention, protection
from the environment, functional fluid resistance, and adhesion of subsequent
coatings. Primers that are listed as specialty coatings in 35 Ill. Adm. Code
219.204(r)(2) are not included under this definition.