1. Regulations
  2. title 14
  3. chapter I
  4. part 25
  5. subpart F
  6. subjgrp 115
  7. § 25.1397

View all text of Subjgrp 115 [§ 25.1381 - § 25.1403]

§ 25.1397 - Color specifications.

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 y0−0.010, whichever is the smaller; and y is not greater than x + 0.020 nor 0.636−0.400x; Where y0 is the y coordinate of the Planckian radiator for the value of x considered. [Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-27, 36 FR 12972, July 10, 1971]

AUTHORITY: 49 U.S.C. 106(f), 106(g), 40113, 44701, 44702 and 44704; Pub. L. 115-254, 132 Stat 3281 (49 U.S.C. 44903 note).

SOURCE: Docket No. 5066, 29 FR 18291, Dec. 24, 1964, unless otherwise noted.

CITE AS: 14 CFR 25.1397