StacksVerified U.S. regulatory reference

14 CFR §25.1399

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Each riding (anchor) light required for a seaplane or amphibian must be installed so that it can—
    1. (1)Show a white light for at least 2 nautical miles at night under clear atmospheric conditions; and
    2. (2)Show the maximum unbroken light practicable when the airplane is moored or drifting on the water.
  2. (b)Externally hung lights may be used.