AC 150/5345-55A, ADVISORY CIRCULAR, SPECIFICATION FOR L-893, LIGHTED VISUAL AID TO INDICATE TEMPORARY RUNWAY CLOSURE (27 JUN 2007)

AC 150/5345-55A, ADVISORY CIRCULAR, SPECIFICATION FOR L-893, LIGHTED VISUAL AID TO INDICATE TEMPORARY RUNWAY CLOSURE (27 JUN 2007)., This advisory circular (AC) provides guidance in the design of a lighted visual aid to indicate temporary runway closure.