Sec. 145.25 - Advertising.
(a) Whenever the advertising of a
certificated repair station indicates that it is certificated, it must
clearly state its certificate number.
(b) Paragraph (a) of this section
applies to advertising in --
(1) Business letterheads;
(2) Billheads and statements;
(3) Customer estimates and inspection
(4) Hangar or shop signs;
(5) Magazines, periodicals, or trade
(6) Any form of promotional media.