 | This article was nominated for deletion on 3 April 2014 (UTC). The result of the discussion was no consensus. |
Reference 1 is obsolete and should be replaced by https://www.faa.gov/documentlibrary/media/advisory_circular/ac_70_7460-1l_change_1_obstruction_marking_and_lighting_10062016.pdf 107.5.4.72 (talk) 23:41, 19 February 2017 (UTC)