14 CFR 27.1397 - Color specifications.
Each position light color must have the applicable International Commission on Illumination chromaticity coordinates as follows:
y is not greater than 0.335; and
z is not greater than 0.002.
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.
x is not less than 0.300 and not greater than 0.540;
y is not less than x−0.040” or y c−0.010, whichever is the smaller; and
y is not greater than x 0.020 nor 0.636−0.400x;
Where y c is the y coordinate of the Planckian radiator for the value of x considered.
[Doc. No. 5074, 29 FR 15695, Nov. 24, 1964, as amended by Amdt. 27-6, 36 FR 12972, July 10, 1971]
Title 14 published on 2014-01-01
no entries appear in the Federal Register after this date.