14 CFR 29.1397
§ 29.1397 Color specifications.
United States · 14 CFR — Aeronautics and Space · Status: effective
Cite this
- Citation
- 14 CFR 29.1397, § 29.1397 Color specifications, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/54947
- Permanent ID
ys:prov:54947@1- SHA-256
0efc6a157a202db8bbcb9f071fa7df23c68847ebcecb72782cf36f011861db65
The hash is SHA-256 of this version's text, with every run of whitespace collapsed to a single space and the ends trimmed. The ID always leads back here, and checking it says whether the text you cited is still the current version.
Full text
Each position light color must have the applicable International Commission on Illumination chromaticity coordinates as follows:
(a) Aviation red—
y is not greater than 0.335; and
z is not greater than 0.002.
(b) Aviation green—
x is not greater than 0.440−0.320y;
x is not greater than y−0.170; and
y is not less than 0.390−0.170x.
(c) Aviation white—
x is not less than 0.300 and not greater than 0.540;
y is not less than x−0.040 or yc−0.010, whichever is the smaller; and
y is not greater than x + 0.020 nor 0.636−0.400x;
Where Ye is the y coordinate of the Planckian radiator for the value of x considered.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.