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Advisory Circulars (ACs)

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Advisory Circulars (ACs) search results
Number Title Status Office Date
90-116 Additional Pilot Program for Phase I Flight Test

This advisory circular (AC) provides information and guidance on the Additional Pilot Program (APP) for flight testing experimental aircraft.

Active AFS-800 2014-09-23
90-48E Pilots’ Role in Collision Avoidance

This AC is issued to assist pilots with their regulatory obligation to see and avoid other aircraft.

Active AFS-800 2022-10-20
90-95 Unanticipated Right Yaw in Helicopters

Examines the unanticipated right yaw phenomenon, the circumstances under which it may be encountered, how it can be prevented, and how the pilot should react if it is encountered.

Active AFS-800 1995-02-07
90-109A Transition to Unfamiliar Aircraft

This advisory circular (AC) is intended to help plan the transition to any unfamiliar fixed-wing airplanes, including type-certificated (TC) and/or experimental airplanes.

Active AFS-800 2015-06-29
90-66C Non-Towered Airport Flight Operations

This AC calls attention to regulatory requirements, recommended operations, and communications procedures for operating at an airport without a control tower or an airport with a control tower that operates only part time.

Active AFS-800 2023-06-06