(a) Each riding light required for water operation must be installed so that it can—
(1) Show a white light for at least two miles at night under clear atmospheric conditions; and
(2) Show a maximum practicable unbroken light with the rotorcraft on the water.
(b) Externally hung lights may be used.
source: Docket No. 5084, 29 FR 16150, Dec. 3, 1964, unless otherwise noted.
cite as: 14 CFR 29.1399