The display of flashing or steady burning lights on an obstruction during daylight hours, for the purpose of warning airmen of the presence of such an obstruction, may be prescribed under certain conditions. The foregoing day lighting is intended to provide protection in addition to that provided by the applicable marking standard hereinbefore described.
[Statutory Authority: Chapter 47.68
RCW. WSR 96-17-018 (Order 164), recodified as § 468-240-110, filed 8/13/96, effective 9/13/96; O.M.&L. standards (part), filed 9/13/61.]