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Advisory Circulars (ACs)

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Advisory Circulars (ACs) search results
Number Title Status Office Date
135-45A Use of Noncertified Weather Observations in Noncontiguous States

This AC provides information and recommendations to air carriers operating under the authority of Title 14 of the Code of Federal Regulations (14 CFR) part 135 and in the noncontiguous States (i.e., Alaska or Hawaii) on the use of noncertified weather information in support of instrument approaches conducted under instrument flight rules (IFR) at airports without destination weather reporting approved by the National Weather Service (NWS) or the Federal Aviation Administration (FAA).

Active AFS-200 2026-01-13
135-14B Helicopter Air Ambulance Operations

To address an increase in fatal HAA accidents, the FAA has implemented new operational procedures and additional equipment requirements for HAA operations. The FAA, HAA operators and medical community all play vital roles in applying these changes to ensure safety.

Active AFS-200 2015-03-26
135-43 Part 135 Second in Command Professional Development Program with Change 1

This AC provides information and guidelines to Title 14 of the Code of Federal Regulations (14 CFR) part 135 air carriers/operators to aid in the development of a Second in Command Professional Development Program (SIC PDP) which meets the requirements of part 135, § 135.99(c).

Active AFS-200 2018-06-28