AC_70_7460-1L_-_Obstuction_Marking_and_Lighting_-_Change_2.pdf - Advisory Circular Subject Obstuction Marking and Lighting Date AC No 70/7460-1L

AC_70_7460-1L_-_Obstuction_Marking_and_Lighting_-_Change_2.pdf

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Advisory Circular Subject: Obstuction Marking and Lighting Date: 08/17/18 AC No. 70/7460-1L Initiated By: AJV-15 Change: 2 1. Purpose. This Advisory Circular (AC) sets forth standards for marking and lighting obstructions that have been deemed to be a hazard to air navigation. The change number and date of the change material are located at the top of the page. Advisory Circular 70/7460-1L is effective September 6, 2018 . 2. Principal Changes. a. Page 5-2. Addition of Paragraph 2. In response to the Safety Risk Assessment of Light Emitting Diode (LED) Lighting in Aircraft Operations report, which summarizes the results of a safety risk assessment on the use of LED lighting technology across the National Airspace System (NAS), the FAA has published specifications for LED- based red obstruction lights. This paragraph cross-references the new lighting specification and associated Engineering Brief. b. Reporting Requirements . Updated All Figures in Appendix A, Pages A-1 to A-30. 3. Application. The FAA recommends the guidelines and standards in this AC for determining the proper way to light and mark obstructions affecting navigable airspace. This AC does not constitute a regulation and, in general, is not mandatory. However, a sponsor proposing any type of construction or alteration of a structure that may affect the National Airspace System (NAS) is required under the provisions of Title 14 Code of Federal Regulations to notify the FAA by completing the Notice of Proposed Construction or Alteration form (FAA Form 7460-1). These guidelines may become mandatory as part of the FAA’s determination and should be followed on a case-by- case basis, as required. 4. Comments or Suggestions. Direct comments or suggestions regarding this AC to: Manager, Obstruction Evaluation Group Federal Aviation Administration ATTN: AJV-15 800 Independence Avenue, S.W. Washington, DC 20591
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. I -�� 5-2 08/17/2018 AC 70/7460-IL CHG 2 Page Control Chart Dated Insert Pa2es Dated 10/08/16 5-2 0 9 /06/18 A-1 to A-30 10/08/16 A-1 to A-30 0 9 /06/18 Maurice Hoffman Director, Airspace Services Mission Support Services
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10/8/2016 AC 70/7460-1L CHG1 Advisory Circular Subject: Obstruction Marking and Lighting Date: 10/8/2016 AC No. 70/7460-1L Initiated By: AJV-15 Change: 1 1. Purpose. This Advisory Circular (AC) sets forth standards for marking and lighting obstructions that have been deemed to be a hazard to air navigation. The change number and date of the change material are located at the top of the page. 2. Effective Date. This change is effective October 8, 2016. 3. Explanation of Changes. a. Page 2-2. Paragraph 2.4.3 Note 2 stated NOTAMS were automatically deleted from the system after 15 days and the sponsor was responsible for calling outage reporting to extend the outage date or to report a return to service date. This paragraph has been deleted. Tower owners now have the option to select the amount of time their NOTAMS remain active.
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