View all text of Subpart F [§ 172.500 - § 172.560]
§ 172.530 - OXYGEN placard.
(a) Except for size and color, the OXYGEN placard must be as follows:
(b) In addition to complying with § 172.519 of this subpart, the background color on the OXYGEN placard must be yellow. The symbol, text, class number and inner border must be black.