(1) Any observed or otherwise known extinguishment of improper functioning of a marker light, regardless of its position on a manmade obstruction, which will last more than 30 minutes and any observed or otherwise known extinguishment or improper functioning of a steady burning obstruction light, installed at the top or near top of any natural or manmade obstruction, which will last more than 30 minutes should be immediately reported. Such reports should be made by telephone or telegraph to the nearest airways communications station or office of Washington state aeronautics commission and should set forth the condition of the light, or lights, the circumstance which caused the failure and the probable date that normal operation will be resumed. Further notification by telephone or telegraph should be given immediately upon resumption of normal operation by the light, or lights.

(2) Any extinguishment or improper functioning of a steady burning side or intermediate light, or lights, installed on a natural or manmade obstruction should be corrected as soon as possible, but notification of such extinguishment or improper functioning is not necessary.