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United States Department of Transportation United States Department of Transportation

Advisory Circulars (ACs)

Number, title, description, or office

Browse by Topic or FAR Part

00 General
11 General Rule-Making Procedures
13 Investigation and Enforcement Procedures
20 Aircraft
21 Certification Procedures for Products and Parts
23 Airworthiness Standards: Normal, Utility, and Acrobatic Category Airplanes
25 Airworthiness Standards: Transport Category Airplanes
27 Airworthiness Standards: Normal Category Rotorcraft
29 Airworthiness Standards: Transport Category Rotorcraft
33 Airworthiness Standards: Aircraft Engines
34 Fuel Venting and Exhaust Emission Requirements for Turbine Engine Powered Airplanes
35 Airworthiness Standards
36 Noise Standards: Aircraft Type and Airworthiness Certification
39 Airworthiness Directives
43 Maintenance, Preventive Maintenance, Rebuilding and Alteration
45 Identification and Registration Marking
60 Airmen
61 Certification: Pilots and Flight Instructors
63 Certification: Flight Crewmembers Other Than Pilots
65 Certification: Airmen Other Than Flight Crewmembers
70 Airspace
73 Special Use Airspace
90 Air Traffic and General Operating Rules
89 Remote Identification of Unmanned Aircraft Systems
91 General Operating and Flight Rules
97 Standard Instrument Approach Procedures
99 Security Control of Air Traffic
103 Ultralight Vehicles
105 Sport Parachuting
107 Small Unmanned Aircraft Systems
108 Airplane Operators Security
109 Indirect Air Carrier Security
120 Air Carriers, Air Travel Clubs, and Operators for Compensation or Hire Certification and Operations
121 Certification and Operations: Domestic Flag, and Supplemental Air Carriers and Commercial Operators of Large Aircraft
125 Certification and Operations: Airplanes Having a Seating Capacity of 20 or More Passengers or a Maximum Payload Capacity of 6,000 Pounds or More
129 Operations of Foreign Air Carriers
133 Rotorcraft External-Load Operations
135 Air Taxi Operators and Commercial Operators
137 Agricultural Aircraft Operations
140 Schools and Other Certificated Agencies
141 Pilot Schools
145 Repair Stations
147 Aviation Maintenance Technician Schools
150 Airports
170 Navigational Facilities
210 Flight Information
211 Aeronautical Charts and Flight Information Publications
410–460 Commercial Space Transportation

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