Obstruction lighting by nonstandard lights.
Obstruction lighting installations may utilize incandescent lamps other than those specified under the recommended lamp equipment, gaseous tubes such as neon tubes, or any method other than the conventional incandescent lamps, provided such lighting installations offer equal or greater light intensity in all angles of azimuth and elevation than that specified for standard obstruction light assemblies, afford equal or greater dependability of operation, and possess the color characteristics prescribed in the following specifications.
[Statutory Authority: Chapter 47.68
RCW. WSR 96-17-018 (Order 164), recodified as § 468-240-165, filed 8/13/96, effective 9/13/96; O.M.&L. standards (part), filed 9/13/61.]