§27.1399 Riding light.

(a) Each riding light required for water operation must be installed so that it can—

(1) Show a white light for at least two nautical 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.

[Docket No. 5074, 29 FR 15695, Nov. 24, 1964; as amended by Amdt. 27–2, 33 FR 964, Jan. 26, 1968]