Airports
Draft AC Updates Non-tower Operational Procedures
Draft contains recommended traffic patterns, communications phraseology and operational procedures for use by aircraft, in addition to drones.

A quarter century after issuing its first Advisory Circular (AC) on operating procedures at non-tower airports, the FAA has issued the draft of an updated version. Proposed AC 90-66B contains many changes from the original AC published in August 1993, including adding information pertaining to drones. The advisory also applies to controlled airports when their towers are not in operation.