14 CFR § 25.1391
Minimum intensities in the horizontal plane of forward and rear position lights
July 13, 2020
Each position light intensity must equal or exceed the applicable values in the following table:
Open Table
Dihedral angle (light included) | Angle from right or left of longitudinal axis, measured from dead ahead | Intensity (candles) |
---|---|---|
L and R (forward red and green) | 0° to 10° 10° to 20° 20° to 110° |
40 30 5 |
A (rear white) | 110° to 180° | 20 |