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United States Department of Transportation United States Department of Transportation

Advisory Circulars (ACs)

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Advisory Circulars (ACs) search results
Number Title Status Office Date
70/7460-2K Proposed Construction of Alteration of Objects That May Affect the Navigable Airspace Cancelled ATA-400 2000-03-01
70/7460-1K Obstruction Marking and Lighting

This Advisory Circular (AC) sets forth standards for marking and lighting obstructions that have been deemed to be a hazard to navigable airspace.

 Cancelled AJR-33 2007-02-01
70/7460-1L Obstruction Marking and Lighting with Change 2

This Advisory Circular (AC) sets forth standards for marking and lighting obstructions that have been deemed to be a hazard to air navigation.

Cancelled AJV-1 2016-10-08