Part 21 Manual of Standards Instrument 2016
6Minimum performance standard — marking
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6 Minimum performance standard — marking
(1) The equipment must be permanently and legibly marked with the following:
(a) either:
(i) the class of the equipment in accordance with RTCA/DO‑181 or ED‑73; or
(ii) if the equipment meets more than 1 class — the class with the more stringent requirements;
(b) if the equipment is of a level within the meaning of ED‑73 — either:
(i) the level of the equipment in accordance with ED‑73; or
(ii) if the equipment meets more than 1 level — the level with the more stringent requirements;
(c) the environmental categories over which the equipment has been designed to operate mentioned in Appendix A of RTCA/DO-160F;
(d) if an environmental test procedure is not applicable and the test is not conducted — an “X” in the space in which the category would otherwise be marked.
(2) Subject to subclause (3), each component of the equipment, including the antenna and receiver-transmitter, must be permanently and legibly marked with:
(a) the name of the manufacturer; and
(b) “ATSO-1C112”; and
(c) the environmental categories over which it is designed to operate.
(3) Subclause (2) does not apply to a component, other than the antenna and receiver-transmitter, to the extent the shape, size or nature of the component makes it impracticable to mark on the component the information required by subclause (2).