Sarah Nilsson JD, PhD, MAS
Sarah NilssonJD, PhD, MAS

ACs - General

AC 00-1.1B Public Aircraft Operations—Manned and Unmanned

AC 00-6B - Aviation Weather

AC 00-24C Thunderstorms

AC 00-30C Clear Air Turbulence Avoidance

AC 00-31A United States (U.S.) National Aviation Standard for the Very High Frequency Omnidirectional Radio Range (VOR)/Distance Measuring Equipment (DME)/Tactical Air Navigation (TACAN) Systems

AC 00-33A Nickel-Cadmium Battery Operational, Maintenance, and Overhaul Practices

AC 00-34A Aircraft Ground Handling and Servicing

AC 00-41B  FAA Quality Control System Certification Program

AC 00-44II Status of Federal Aviation Regulations

AC 00-45H - Aviation Weather Services - Change 2

AC 00-46F - Aviation Safety Reporting Program

AC 00-54 Pilot Windshear Guide

AC 00-56B Voluntary Industry Distributor Accreditation Program

AC 00-57 Hazardous Mountain Winds and Their Visual Indicators

AC 00-58B Voluntary Disclosure Reporting Program

AC 00-59 Integrating Helicopter and Tiltrotor Assets into Disaster Relief Planning

AC 00-60B North American Free Trade Agreement and Specialty Air Services Operations

AC 00-61 Event Planning Guide

AC 00-63A Use of Cockpit Displays of Digital Weather and Aeronautical Information - Including Change 1

AC 00-64 Air Medical Resource Management

AC 00-65 Towbar and Towbarless Movement of Aircraft

AC 00-66 Selection of Cyclic Redundancy Code and Checksum Algorithms to Ensure Critical Data Integrity

AC 00-68 Aircraft Certification Service Voluntary Disclosure Reporting Program

AC 00-69 The title is Best Practices for Airborne Software Development Assurance Using EUROCAE ED-12( ) and RTCA DO-178( )

AC 00-70 Flightcrew Member Certificate Verification Plan

AC 00-74 - Avionics Human Factors Considerations for Design and Evaluation


ACs - General Rule-Making Procedures

AC 11-2A Notice of Proposed Rulemaking Distribution System


ACs - Aircraft

AC 20-18B Qualification Testing of Turbojet and Turbofan Engine Thrust Reversers

AC 20-190 Aircraft Electromagnetic Compatibility Certification


ACs - Certification Procedures for Products and Parts

AC 21-2L Complying with the Requirements of Importing Countries or Jurisdictions When Exporting U.S. Products, Articles, or Parts

AC 21-4B Special Flight Permits for Operation of Overweight Aircraft

AC 21-12C - Application for U.S. Airworthiness Certificate, FAA Form 8130–6

AC 21-13 Standard Airworthiness Certification of Surplus Military Aircraft and Aircraft Built from Spare and Surplus Parts

AC 21-16G - RTCA Document DO-160 versions D, E and F, “Environmental Conditions and Test Procedures for Airborne Equipment”

AC 21.17-1A Type Certification-Airships

AC 21.17-2A Type Certification-Fixed Wing Gliders (Sailplanes), Including Powered Gliders

AC 21.17-3 Type Certification of Very Light AirplanesUnder FAR 21.17(b)

AC 21-19B Installation of Used Aircraft Engines in New Production Aircraft

AC 21-21 Use of Automobile Gasoline in Agricultural Aircraft

AC 21-22 Injury Criteria for Human Exposure to Impact

AC 21-23B Airworthiness Certification of Civil Aircraft, Engine, Propellers, and Related Products Imported to the United States

AC 21-24A Extending a Production Certificate to a Facility Located in a Bilateral Airworthiness Agreement Country

AC 21.25-1 Issuance of Type Certificate: Restricted Category Agricultural Airplanes

AC 21-25B - Approval of Modified Seating System Initially Approved Under a Technical Standard Order

AC 21-26A Quality Control for the Manufacture of Composite Structures

AC 21-28 Airworthiness Certification of U.S.-Produced Aircraft and Engine Kits Assembled Outside the United States

AC 21-29D - Detecting and Reporting Suspected Unapproved Parts

AC 21-31A Quality Control for the Manufacature of Non-Metallic Compartment Interior Components

AC 21-32B Control of Products and Parts Shipped Prior to Type Certificate Issuance

AC 21-34 Shoulder Harness-Safety Belt Installations

AC 21-37 Primary Category Aircraft

AC 21-40A Guide for Obtaining a Supplemental Type Certificate

AC 21-41A Replacing MIL-S-8879C With SAE AS8879

AC 21-43A - Production Under 14 CFR Part 21,Subparts F, G, K, and O

AC 21-44A - Issuance of Export Airworthiness Approvals Under 14 CFR Part 21 Subpart L

AC 21-45 - Commercial Parts

AC 21-46A - Technical Standard Order Program

AC 21-47 - Submittal Of Data To An ACO, A DER Or An ODA For A Major Repair Or Major Alteration

AC 21-48 - Using Electronic Modeling Systems as Primary Type Design Data

AC 21-49 - Gaining Approval Of Seats With Integrated Electronic Components

AC 21-50 - Installation of TSOA Articles and LODA Appliances

AC 21-51 - Applicant’s Showing of Compliance and Certifying Statement of Compliance

AC 21-52 - Obtaining Foreign Design Approval / Acceptance of U.S. Products and Articles

AC 21-54 - Experimental Airworthiness Certification of Certain Former Military Aircraft

AC 21-55 - Process to Support FAA Findings of Undue Burden or No Undue Burden for PAHs Requesting to Use a Manufacturing Facility Located Outside of the United States

AC 21.101-1B - Establishing the Certification Basis of Changed Aeronautical Products

AC 21.303-4 - Application for Parts Manufacturer Approval Via Tests and Computations or Identicality


ACs - Airworthiness Standards - Normal, Utility, Acrobatic Category Airplanes

AC 23-2A Flammability Tests

AC 23-8C Flight Test Guide for Certification of Part 23 Airplanes

AC 23-9 [Large AC] Evaluation of Flight Loads on Small Airlpanes with T, V, +, or Y Empennage Configurations

AC 23-10 Auxiliary Fuel Systems for Reciprocating and Turbine Powered Part 23 Airplanes

AC 23-13A Fatigue, Fail-Safe, and Damage Tolerance Evaluation of Metallic Structure for Normal, Utility, Acrobatic, and Commuter Category Airplanes

AC 23-14 Type Certification Basis for Conversion from Reciprocating Engine to Turbine-Powered Part 23 Airplanes

AC 23-15A Small Airplane Certification Compliance Program

AC 23-16A Powerplant Guide for Certification of Part 23 Airplanes and Airships

AC 23-17C Systems and Equipment Guide for Certification of Part 23 Airplanes and Airships

AC 23-18 Installation of Terrain Awareness and Warning System (TAWS) Approved for Part 23 Airplanes

AC 23-19A Airframe Guide for Certification of Part 23 Airplanes

AC 23-20 Acceptance Guidance on Material Procurement and Process Specifications for Polymer Matrix Composite Systems

AC 23-21 Airworthiness Compliance Checklists Used to Substantiate Major Alterations for Small Airplanes with Change 1

AC 23-22 Guidance for Approved Model List (AML) Supplemental Type Certificated (STC) Approval of Part 23 Airplane Avionics Installations

AC 23-23 Standardization Guide for Integrated Cockpits in Part 23 Airplanes

AC 23-24 Airworthiness Compliance Checklists for Common Part 23 Supplemental Type Certificate (STC) Projects

AC 23-27 Parts and Materials Substitution for Vintage Aircraft

AC 23.562-1 Dynamic Testing of Part 23 Airplane Seat/Restraint Systems and Occupant Protection

AC 23.607-1 Self-Locking Nuts on Bolts Subject to Rotation

AC 23.629-1B Means of Compliance with Title 14 CFR, Part 23, § 23.629, Flutter

AC 23.1309-1E System Safety Analysis and Assessment for Part 23 Airplanes

AC 23.1311-1C Installation of Electronic Display in Part 23 Airplanes

AC 23.1521-1B Type Certification of Automobile Gasoline in Part 23 Airplanes with Reciprocating Engines

AC 23.1521-2 Type Certification of Oxygenates and Oxygenated Gasoline Fuels in Part 23 Airplanes with Reciprocating Engines

AC 23-1523 Minimum Flight Crew

AC 23.2010-1 FAA Accepted Means of Compliance Process for 14 CFR Part 23


ACs - Airworthiness Standards - Transport Category Airplanes

AC 25-7D Flight Test Guide for Certification of Transport Category Airplanes

AC 25-8 Auxiliary Fuel Systems Installations

AC 25-9A Smoke Detection, Penetration, and Evacuation Tests and Related Flight Manual Emergency Procedures

AC 25-11B Electronic Flight Displays

AC 25-12 Airworthiness Criteria for the Approval of Airborne Windshear Warning Systems in Transport Category

AC 25-13 Reduced and Derated Takeoff Thrust (Power) Procedures

AC 25-15 Approval of Flight Management Systems in Transport Category Airplanes

AC 25-16 Electrical Fault and Fire Prevention and Protection

AC 25-17A Transport Airplane Cabin Interiors Crashworthiness Handbook

AC 25-18 Transport Category Airplanes Modified for Cargo Service

AC 25-19A Certification Maintenance Requirements

AC 25-20 Pressurization, Ventilation and Oxygen Systems Assessment for Subsonic Flight including High Altitude Operation

AC 25-22 Certification of Transport Airplane Mechanical Systems

AC 25-23 Airworthiness Criteria for the Installation Approval of a Terrain Awareness and Warning System (TAWS) for Part 25 Airplanes

AC 25-24 Sustained Engine Imbalance

AC 25-25A Performance and Handling Characteristics in Icing Conditions

AC 25-26 Development of standard wiring practices documentation

AC 25-27A Development of Transport Category Airplane Electrical Wiring Interconnection Systems Instructions for Continued Airworthiness Using and Enhanced Zonal Analysis Procedure

AC 25-28 Compliance of Transport Category Airplanes with Certification Requirements for Flight in Icing Conditions

AC 25-29 Development of a Nondestructive Inspection Program/Organization

AC 25-30 Fuel Tank Strength in Emergency Landing Conditions

AC 25-31 Takeoff Performance Data for Operations on Contaminated Runways

AC 25-32 Landing Performance Data for Time-of-Arrival Landing Performance Assessments

AC 25.307-1 Proof of Structure

AC 25.335-1A Design Dive Speed

AC 25.341-1 Dynamic Gust Loads

AC 25.362-1 Engine Failure Loads

AC 25.415-1 Ground Gust Conditions

AC 25.491-1 Taxi, Takeoff and Landing Roll Design Loads

AC 25.562-1B Dynamic Evaluation of Seat Restraint Systems and Occupant Protection on Transport Airplanes / with Change 1

AC 25.571-1D Damage Tolerance and Fatigue Evaluation of Structure

AC 25.613-1 Material Strength Properties and Material Design Values

AC 25.621-1 Casting Factors

AC 25.629-1B Aeroelastic Stability Substantiation of Transport Category Airplanes

AC 25.703-1 Takeoff Configuration Warning Systems

AC 25.723-1 Shock Absorption Tests

AC 25.729-1 Transport Airplane Landing Gear Retracting Mechanism

AC 25.735-1 Brakes and Braking Systems Certification Tests and Analysis

AC 25.773-1 Pilot Compartment View Design Considerations

AC 25.775-1 Windows and Windshields

AC 25.783-1A Fuselage Doors and Hatches

AC 25.785-1B Flight Attendant Seat and Torso Restraint System Installations

AC 25.795-1A FlightDeck Intrusion Resistance

AC 25.795-2A Flight Deck Penetration Resistance

AC 25.795-3 Flightdeck Protection (Smoke and Fumes)

AC 25.795-4 Passenger Cabin Smoke Protection

AC 25.795-5 Cargo Compartment Fire Suppression

AC 25.795-6 Least Risk Bomb Location

AC 25.795-7 Survivability of Systems

AC 25.795-8 Interior Design to Facillitate Searches

AC 25.795-9 Chemical Oxygen Generator Security Standards

AC 25.803-1A Emergency Evacuation Demonstrations

AC 25.807-1 Uniform Distribution of Exits

AC 25.812-1A Floor Proximity Emergency Escape Path Marking

AC 25.812-2 Floor Proximity Emergency Escape Path Marking Systems Incorporating Photoluminescent Elements

AC 25.851-1 Built-in Fire Extinguishing/Suppression Systems in Class C and Class F Cargo Compartments

AC 25.853-1 Flammability Requirements for Aircraft Seat Cushions

AC 25.856-1 Thermal/Acoustic Insulation Flame Propagation Test Method Details

AC 25.856-2A Installation of Thermal/Acoustic Insulation for Burnthrough Protection

AC 25.857-1 Class B and F Cargo Compartments

AC 25.869-1A Fire Protection: Systems

AC 25.899-1 Electrical bonding and protection against static electricity

AC 25.905-1 Minimizing the Hazards from Propeller Blade and Hub Failures

AC 25.939-1 Evaluating Turbine Engine Operating Characteristics

AC 25.954-1 Transport Airplane Fuel System Lightning Protection

AC 25.963-1 Fuel Tank Access Covers

AC 25.975-1 Fuel Vent Fire Protection

AC 25.981-1D Fuel Tank Ignition Source Prevention Guidelines

AC 25.981-2A Fuel Tank Flammability

AC 25.994-1 Design Considerations to Protect Fuel Systems during a Wheels-Up Landing

AC 25.1302-1 Installed Systems and Equipment for Use by the Flightcrew

AC 25.1309-1A System Design and Analysis

AC 25.1322-1 Flightcrew Alerting

AC 25.1329-1C Approval of Flight Guidance Systems, Including Change 1

AC 25.1353-1A Electrical equipment and installations

AC 25.1357-1A Circuit protective devices

AC 25.1360-1 Protection Against Injury

AC 25.1362-1 Electrical Supplies for Emergency Conditions

AC 25.1365-1 Electrical Appliances, Motors, and Transformers

AC 25.1435-1 Hydraulic System Certification Tests and Analysis

AC 25.1455-1 Waste Water/Potable Water Drain System Certification Testing

AC 25.1523-1 Minimum Flightcrew

AC 25.1529-1A Instructions for Continued airworthiness of Structural Repairs on Transport Airplanes

AC 25.1581-1 Airplane Flight Manual

AC 25.1701-1 Certification of Electrical Wiring Interconnection Systems on Transport Category Airplanes


ACs - Airworthiness Standards - Normal Category Rotorcraft

AC 27-1B Certification of Normal Category Rotorcraft (Changes 1 - 8 incorporated)


ACs - Airworthiness Standards - Transport Category Rotorcraft

AC 29-2C Certification of Transport Category Rotorcraft (Changes 1 - 8 incorporated)


ACs - Airworthiness Standards - Aircraft Engines

AC 33-2C General Type Certification Guidelines for Turbine Engines

AC 33.4-1 Instructions for Continued Airworthiness

AC 33.4-2 Instructions for Continued Airworthiness: In-Service Inspection of Safety Critical Turbine Engine Parts at Piece-Part Opportunity

AC 33.4-3 Instructions for Continued Airworthiness, Aircraft Engine High Intensity Radiated Fields (HIRF) and Lightning Protection Features - Including Change 1

AC 33-5 Turbine Engine Rotor Blade Containment/Durability

AC 33-6 Weld Repair of Aluminum Crankcases and Cylinders of Piston Engines - Including Change 1

AC 33-7A Guidance for 30-Second and 2-Minute One-Engine-Inoperative (OEI) Ratings for Rotorcraft Turbine Engines

AC 33.7-1 Ratings and Operating Limitations for Turbine Engines (Sections 33.7 and 33.8)

AC 33-8 Guidance for Parts Manufacturer Approval of Turbine Engine and Auxiliary Power Unit Parts under Test and Computation

AC 33-9 Developing Data for Major Repairs of Turbine Engine Parts

AC 33-11 Oxidation, Hot Corrosion, Thermal Fatigue, and Erosion Characteristics Testing to Support 14 CFR, Part 33, § 33.15, Compliancefor Turbine Engines

AC 33.14-1 Damage Tolerance for High Energy Turbine Engine Rotors - Including Change 1

AC 33.15-1 Manufacturing Process of Premium Quality Titanium Alloy Rotating Engine Components

AC 33.15-2 Manufacturing Processes for Premium Quality Nickel Alloy for Engine Rotating Parts

AC 33.17-1A Engine Fire Protection

AC 33.19-1 Guidance Material for 14 CFR §33.19, Durability, for Reciprocating Engine Redesigned Parts

AC 33.27-1A Engine and Turbosupercharger Rotor Overspeed Requirements of 14 CFR § 33.27

AC 33.28-1 Compliance Criteria for 14 CFR §33.28, Aircraft Engines, Electrical and Electronic Engine Control Systems

AC 33.28-2 Guidance Material for 14 CFR 33.28, Reciprocating Engine, Electrical and Electronic Engine Control Systems

AC 33.28-3 Guidance Material For 14 CFR §33.28, Engine Control Systems

AC 33.47-1 Detonation Testing in Reciprocating Aircraft Engines

AC 33.63-1 Turbine Engine Vibration

AC 33.64-1 Guidance for Pressurized Engine Static Parts

AC 33.65-1 Surge and Stall Characteristics of Aircraft Turbine Engines

AC 33.70-1 Guidance Material for Aircraft Engine Life-Limited Parts Requirements

AC 33.70-2 Damage Tolerance of Hole Features in High-Energy Turbine

AC 33.74/92-1B Turbine Engine Continued Rotation and Rotor Locking

AC 33.75-1A Guidance Material For 14 CFR 33.75, Safety Analysis (With Change 1)

AC 33.76-1A Bird Ingestion Certification Standards

AC 33.78-1 Turbine Engine Power-Loss and Instability in Extreme Conditions of Rain and Hail

AC 33-83A Turbine Engine Vibration Test

AC 33.83-1 Comparative Method to Show Equivalent Vibratory Stresses and High Cycle Fatigue Capability for Parts Manufacturer Approval of Turbine Engine and Auxiliary Power Unit Parts

AC 33.87-1A Engine Overtorque Test, Calibration Test, Endurance Test, and Teardown Inspection for Turbine Engine Certification (§§ 33.84, 33.85, 33.87, 33.93)

AC 33.87-2 Comparative Endurance Test Method to Show Durability for Parts Manufacturer Approval of Turbine Engine and Auxiliary Power Unit Parts

AC 33.90-1A Initial Maintenance Inspection (IMI), 14 CFR 33.90, Test for Turbine Engines

AC 33.91-1 Engine System and Component Tests

AC 33.201-1 Extended Operations (ETOPS) Eligibility for Turbine Engines


ACs - Fuel Venting and Exhaust Emission Requirements for Turbine Engine Powered Airplanes

AC 34-1B Fuel Venting and Exhaust Emission Requirements for Turbine Engine Powered Airplanes


ACs - Maintenance, Preventive Maintenance, Rebuilding and Alteration

AC 43-2B Minimum Barometry for Calibration and Test of Atmospheric Pressure Instruments

AC 43-4B - Corrosion Control for Aircraft

AC 43-6D Altitude Reporting Equipment and Transponder System Maintenance and Inspection Practices

AC 43-9C Maintenance Records

AC 43.9-1G Instructions for Completion of FAA Form 337

AC 43-10C United States—Canadian Bilateral Aviation Safety Agreement Maintenance Implementation Procedures

AC 43-11 Reciprocating Engine Overhaul Terminology and Standards - Including Change 1

AC 43-12A Preventive Maintenance

AC 43.13-1B Acceptable Methods, Techniques, and Practices - Aircraft Inspection and Repair [Large AC. This includes Change 1.]

AC 43.13-2B Acceptable Methods, Techniques, and Practices - Aircraft Alterations

AC 43-14 Maintenance of Weather Radar Radomes

AC 43-15 Recommended Guidelines for Instrument Shops

AC 43-18 Fabrication of Aircraft parts by Maintenance Personnel

AC 43-206 Inspection, Prevention, Control, and Repair of Corrosion on Avionics Equipment

AC 43-207 Correlation, Operation, Design, and Modification of Turbofan/Jet Engine Test Cells

AC 43-208 Maintenance of Emergency Evacuations Systems for Aircraft Operating Under Part 121

AC 43-209A Recommended Inspection Procedures for Former Military Aircraft

AC 43-210A Standardized Procedures for Obtaining Approval of Data Used in the Performance of Major Repairs and Major Alterations - Change 1

AC 43-211A Recommended Alternative Inspection Schedule for Daher (Socata) TBM Series Aircraft

AC 43-213A Parts Marking Identification - Including Change 1

AC 43-214A Repairs and Alterations to Composite and Bonded Aircraft Structure

AC 43-215 Standardized Procedures for Performing Aircraft Magnetic Compass Calibration

AC 43-216 Software Management During Aircraft Maintenance

AC 43-217 Anticollision Light Maintenance (ACLM)


ACs - Certification: Pilots and Flight Instructors

AC 61-47A Use of Approach Slope Indicators for Pilot Training

AC 61-65H - Certification: Pilots and Flight and Ground Instructors

AC 61-67C Stall and Spin Awareness Training with Change 1 & 2

AC 61-83J - Nationally Scheduled, FAA-Approved, Industry-Conducted Flight Instructor Refresher Course

AC 61-89E Pilot Certificates: Aircraft Type Ratings

AC 61-91J WINGS - Pilot Proficiency Programs

AC 61-94 Pilot Transition Course for Self Launching or Powered Sailplanes (Motorgliders)

AC 61-98D - Currency Requirements and Guidance for the Flight Review and Instrument Proficiency Check

AC 61-107B Aircraft Operations at Altitudes Above 25,000 Feet Mean Sea Level or Mach Numbers Greater Than .75/ with Change 1

AC 61-134 General Aviation Controlled Flight into Terrain Awareness

AC 61-135A Conversion Process for Pilot Certificates in Accordance with the Implementation Procedures for Licensing as part of the Bilateral Aviation Safety Agreement Between the Federal Aviation Administration and Transport Canada Civil Aviation Authority for Pilot Licensing

AC 61-136B - FAA Approval of Aviation Training Devices and Their Use for Training and Experience

AC 61-137B Approval of Manufacturer's Required Training Programs

AC 61-138 Airline Transport Pilot Certification Training Program (Change 1)

AC 61-139 Institution of Higher Education’s Application for Authority to Certify its Graduates for an Airline Transport Pilot Certificate with Reduced Aeronautical Experience

AC 61-140A - Autorotation Training

AC 61-141- Flight Instructors as Certifying Officials for Student Pilot and Remote Pilot Applicants

AC 61-142 - Sharing Aircraft Operating Expenses in Accordance with 14 CFR § 61.113 (c)

AC 61-143 Conversion Process for Pilot Certificates in Accordance with the Technical Implementation Procedures - Licensing as Part of the Bilateral Aviation Safety Agreement Between the FAA and EASA


ACs - BasicMed

AC 68-1A - BasicMed


ACs - Air Traffic and General Operating Rules

AC 90-23G Aircraft Wake Turbulence

AC 90-48E Pilots' Role in Collision Avoidance (With Change 1)

AC 90-50D Requirements for 760-Channel VHF Radio for Aeronautical Operations

AC 90-66C - Non-Towered Airport Flight Operations

AC 90-67B Light Signals from the Control Tower for Ground Vehicles, Equipment, and Personnel

AC 90-80C Approval of Offshore Standard Approach Procedures, Airborne Radar Approaches, and Helicopter En Route Descent Areas

AC 90-89B - Amateur-built Aircraft & Ultralight Flight Testing Handbook

AC 90-91K North American Route Program

AC 90-93B Operating Procedures for Airport Traffic Control Towers (ATCT) that are not Operated by, or Under Contract with, the United States (Non-Federal)

AC 90-95 Unanticipated Right Yaw in Helicopters

AC 90-96A Approval of U.S. Operators and Aircraft to Operate Under Instrument Flight Rules (IFR) in European Airspace Designated for Basic Area Navigation (B-RNAV) and Precision Area Navigation (P-RNAV)

AC 90-99 High Altitude Airspace Redesign Phase 1

AC 90-100A U.S Terminal and En Route Area Navigation (RNAV) Operations with Change 2

AC 90-101A Approval Guidance for Required Navigation Performance (RNP) Procedures with Authorization Required (AR) Including Change 1

AC 90-102A Airspace Flow Program

AC 90-105A Approval Guidance for RNP Operations and Barometric Vertical Navigation in the U.S. National Airspace System and in Oceanic and Remote Continental Airspace

AC 90-106A Enhanced Flight Vision Systems - Change 1

AC 90-107 Guidance for Localizer Performance with Vertical Guidance and Localizer Performance without Vertical Guidance Approach Operations in the U.S. National Airspace System

AC 90-108 Use of suitable Area navigation (RNAV) system on Conventional Routes and Procedures - Change 1

AC 90-109A Transition to Unfamiliar Aircraft

AC 90-110B Instrument Flight Procedure Service Provider Authorization Guidance for Space-based Instrument Flight Procedures

AC 90-112A Development and Submission of Special Instrument Procedures to the FAA

AC 90-113B - Instrument Flight Procedure Validation (IFPV) of Performance Based Navigation (PBN) Instrument Flight Procedures (IFP)

AC 90-114B Automatic Dependent Surveillance-Broadcast Operations

AC 90-115 Collaborative Trajectory Options Program (CTOP)

AC 90-116 Additional Pilot Program for Phase I Flight Test

AC 90-117 Data Link Communications


ACs - General Operating and Flight Rules

AC 91.21-1D Use of Portable Electronic Devices Aboard Aircraft

AC 91-26 Maintenance and Handling of Airdriven Gyroscopic Instruments

AC 91-32B Safety in and Around Helicopters

AC 91-33A Use of Alternate Grades of Aviation Gasoline for Grade 80/87, and Use of Automotive Gasoline

AC 91-36D Visual Flight Rules (VFR) Flight Near Noise-Sensitive Areas

AC 91-37B Truth in Leasing

AC 91-44A Operational and Maintenance Practices for Emergency Locator Transmitters and Receivers - Change 1

AC 91-46 Gyroscopic Instruments - Good Operating Practices

AC 91-48 Acrobatics-Precision Flying with a Purpose

AC 91-50 Importance of Transponder Operation and Altitude Reporting

AC 91-53A Noise Abatement Departure Profile

AC 91-55 Reduction of Electrical System Failures following Aircraft Engine Starting

AC 91-56B Continuing Structural Integrity Program for Airplanes

AC 91-57C Exception for Limited Recreational Operations of Unmanned Aircraft

AC 91-58A Use of Pyrotechnic Visual Distress Signaling Devices

AC 91-59A Inspection and Care of General Aviation Aircraft Exhaust Systems - Change 1

AC 91-61 A Hazard in Aerobatics: Effects of G-Forces of Pilots

AC 91-62A Use of Child Seats in Aircraft

AC 91-63D Temporary Flight Restrictions (TFR) and Flight Limitations

AC 91-65 Use of Shoulder Harness in Passenger Seats

AC 91-66 Noise Abatement for Helicopters

AC 91-67 Minimum Equipment Requirements for General Aviation Operations Under FAR Part 91

AC 91-68 Pilot Qualification and Operation of all Surplus Military Turbine-Powered Airplanes

AC 91-69A Seaplane Safety for FAR Part 91 Operators

AC 91-70B Oceanic and Remote Continental Airspace Operations

AC 91-71 Operation of Hot Air Balloons with Airborne Heaters

AC 91-72 Waivers of Provisions of Title 14 of the Code of Federal Regulations Part 91

AC 91-73B Parts 91 and 135 Single Pilot, Flight School Procedures During Taxi Operations

AC 91-74B Pilot Guide: Flight In Icing Conditions

AC 91-75 Attitude Indicator

AC 91-76A Hazard Associated with Sublimation of Solid Carbon Dioxide (Dry Ice) Aboard Aircraft

AC 91-77 General Aviation, Coded Departure Routes (CDR)

AC 91-78 Use of Class 1 or Class 2 Electronic Flight Bag (EFB)

AC 91-79A Mitigating the Risks of a Runway Overrun Upon Landing (Include Chg 1)

AC 91-80 Air Traffic Control System Command Center (ATCSCC) Hotlines

AC 91-81 Dual J80 Route Procedure

AC 91-82A Fatigue Management Programs for In-Service Issues

AC 91-84 Fractional Ownership Programs

AC 91-85B Authorization of Aircraft and Operators for Flight in Reduced Vertical Separation Minimum (RVSM) Airspace

AC 91-86 Guidance on Carrying Noise Certification Documents On Board Aircraft Operating Outside the United States

AC 91-87 Ejection Seat Training Program

AC 91-88 Electronics News Gathering Operations

AC 91-89 Mitsubishi MU-2B Training Program

AC 91-90 - Part 91 Approved Inspection Programs

AC 91-91 Maintaining Public Aircraft

AC 91-92 - Pilot’s Guide to a Preflight Briefing

AC 91.21-1D - Use of Portable Electronic Devices Aboard Aircraft


ACs - Sport Parachuting

AC 105-2E Sport Parachuting


ACs - Small Uncrewed Aircraft Systems

AC 107-2A Small Uncrewed Aircraft System (Small UAS)


ACs - Air Carriers, Air Travel Clubs, and Operators for Compensation or Hire Certification and Operations

AC 120-12A Private Carriage Versus Common Carriage of Persons or Property

AC 120-16G Air Carrier Maintenance Programs

AC 120-17B Reliability Program Methods—Standards for Determining Time Limitations

AC 120-26N Assignment of Aircraft Call Signs and Associated Telephonies

AC 120-27F - Aircraft Weight and Balance Control

AC 120-28D Criteria for Approval of Category III Weather Minima for Takeoff, Landing, and Rollout

AC 120-29A Criteria for Approval of Category I and Category II Weather Minima for Approach

AC 120-32 Air Transportation of Handicapped Persons

AC 120-35D Flightcrew Member Line Operational Simulations: Line-Oriented Flight Training, Special Purpose Operational Training, Line Operational Evaluation

AC 120-38 Transport Category Airplanes Cabin Ozone Concentrations

AC 120-39 Hazards of Waste Water Ice Accumulation Separating from Aircraft in Flight

AC 120-40B Airplane Simulator Qualification

AC 120-41 Criteria for Operational Approval of Airborne Wind Shear Alerting and Flight Guidance

AC 120-42B Extended Operations (ETOPS and Polar Operations)

AC 120-43 The Influence of Beards on Oxygen Mask Efficiency

AC 120-44A Air Carrier First Aid Programs

AC 120-45A Airplane Flight Training Device Qualification

AC 120-47 Survival Equipment for use in Overwater Operations

AC 120-48A Communication and Coordination Between Flightcrew Members and Flight Attendants

AC 120-49A Parts 121 and 135 Certification

AC 120-50A Guidelines for Operational Approval of Windshear Training Programs

AC 120-51E Crew Resource Management Training

AC 120-53B Guidance for Conducting and Use of Flight Standardization Board Evaluations - With Change 1

AC 120-54A Advanced Qualification Program - (Change 1)

AC 120-55C Air Carrier Operational Approval and Use of TCAS II

AC 120-57B Surface Movement Guidance and Control System

AC 120-58 Pilot Guide Large Aircraft Ground Deicing

AC 120-59B Internal Evaluation Programs

AC 120-60B Ground Deicing and Anti-icing Program

AC 120-61B In-flight Radiation Exposure

AC 120-62 Takeoff Safety Training Aid

AC 120-63 Helicopter Simulator Qualification

AC 120-64 Operational Use & Modification of Electronic Checklists

AC 120-66C - Aviation Safety Action Program

AC 120-68J - Pilot Records Database and Pilot Records Improvement Act

AC 120-71B Standard Operating Procedures and Pilot Monitoring Duties for Flight Deck Crewmembers

AC 120-72A - Maintenance Human Factors Training

AC 120-73 Damage Tolerance Assessment of Repairs to Pressurized Fuselages

AC 120-74B Parts 91, 121, 125, and 135 Flightcrew Procedures During Taxi Operations

AC 120-76D - Authorization for Use of Electronic Flight Bags

AC 120-77 Maintenance and Alteration Data

AC 120-78A Electronic Signatures, Electronic Recordkeeping, and Electronic Manuals

AC 120-79A Developing and Implementing an Air Carrier Continuing Analysis and Surveillance System

AC 120-80A In-Flight Fires

AC 120-82 Flight Operational Quality Assurance

AC 120-83 Flight Deck Observer Seat and Associated Equipment

AC 120-84 Aging Aircraft Inspections and Records Reviews

AC 120-85B Carriage of Cargo

AC 120-87C Use of Child Restraint Systems on Aircraft

AC 120-88A Preventing Injuries Caused by Turbulence

AC 120-89 Ground Deicing Using Infrared Energy

AC 120-90 Line Operations Safety Audits

AC 120-91A Airport Obstacle Analysis

AC 120-92B Safety Management Systems for Aviation Service Providers

AC 120-93 Damage Tolerance Inspections for Repairs and Alterations

AC 120-94 Aircraft Electrical Wiring Interconnection Systems Training Program

AC 120-95A Portable Oxygen Concentrators

AC 120-96A Operations Control Center (OCC) for Helicopter Air Ambulance (HAA) Operations

AC 120-97A Incorporation of Fuel Tank System Instructions for Continued Airworthiness into Operator Maintenance or Inspection Programs (Including Change 1)

AC 120-98A Operator Information for Incorporating Fuel Tank Flammability Reduction Requirements into a Maintenance or Inspection Program (Including Change 1)

AC 120-100 Basics of Aviation Fatigue

AC 120-101 Part 121 Air Carrier Operational Control - Change 1

AC 120-102A Incorporation of Electrical Wiring Interconnection Systems Instructions for Continued Airworthiness into an Operator’s Maintenance Program (Including Change 1)

AC 120-103A Fatigue Risk Management Systems for Aviation Safety

AC 120-104 Establishing and Implementing Limit of Validity to Prevent Widespread Fatigue Damage

AC 120-105A Foreign Terminal Instrument Procedures (FTIP) Acceptance/Review

AC 120-106A Scope and Recommended Content for a Contractual Agreement Between an Air Carrier and a Maintenance Provider

AC 120-107 Use of Remote On-Ground Ice Detection System

AC 120-108 Continuous Descent Final Approach

AC 120-109A Stall Prevention and Recovery Training with Change 1

AC 120-110 Aircraft Secondary Barriers and Alternate Flight Deck Security Procedures

AC 120-111 Upset Prevention and Recovery Training - with Change

AC 120-112 Use of Liquid Water Equivalent System to Determine Holdover Times or Check Times for Anti-Icing Fluids

AC 120-113 Best Practices for Engine Time In Service Interval Extensions - Change 1

AC 120-114 Pilot Training and Checking (14 CFR Part 121 Subparts N and O, including Appendices E and F)

AC 120-115 - Maintainer Fatigue Risk Management

AC 120-116 Operations and Airworthiness Considerations for U.S.-Based Leasing Companies Operating U.S.-Registered Large Transport Category Airplanes Which Part 125 Would Apply

AC 120-117 Voluntary Disclosure Reporting Program for Apparent Violations of the Drug and Alcohol Testing Regulations

AC 120-118 Criteria for Approval/Authorization of all Weather Operations for Takeoff, Landing, and Rollout

AC 120-121 Safety Risk Management Involving Items in Aircraft Cargo Compartments


ACs - Certification and Operations: Domestic Flag, and Supplemental Air Carriers and Commercial Operators of Large Aircraft

AC 121-6 Portable Battery-Powered Megaphones

AC 121-22C Maintenance Review Boards, Maintenance Type Boards, and OEM/TCH Recommended Maintenance Procedures

AC 121-24D Passenger Safety Information Briefing and Briefing Cards

AC 121-25 Additional Weather Information: Domestic and Flag Air Carriers

AC 121-28 Preparation and Loading of Magnetron Magnetic Materials for Air Transportation

AC 121-29B Carry-On Baggage

AC 121-31 Flight Crew Sleeping Quarters and Rest Facilities

AC 121-32A Dispatch Resource Management Training

AC 121-33B Emergency Medical Equipment

AC 121-34B Emergency Medical Equipment Training

AC 121-35 Management of Passengers during Ground Operations without Cabin Ventilation

AC 121-36 Management of Passengers who may be Sensitive to Allergens

AC 121-37A Voluntary Disclosure Reporting Program - Hazardous Materials

AC 121-38 Reporting Hazardous Materials Discrepancies to the Federal Aviation Administration

AC 121-39 Air Carrier Pilot Remedial Training and Tracking Program

AC 121-40 14 CFR Part 121 and Part 135 Dangerous Goods Transportation Operations

AC 121-42 - Leadership and Command Training for Pilots in Command

AC 121-43 - Mentoring Training for Pilots in Command

AC 121-37A Voluntary Disclosure Reporting Program - Hazardous Materials

AC 121.195-1A Operational Landing Distances for Wet Runways; Transport Category Airplanes

AC 121.321-1 Compliance with Requirements of § 121.321, Operations in Icing


ACs - Certification and Operations: Airplanes having a seating capacity of 20 or more passengers or a maximum payload capacity of 6,000 pounds or more

AC 125-1A Operations of Large Airplanes Subject to 14 CFR Part 125


ACs - Rotorcraft External-Load Operations

AC 133-1B - Rotorcraft External-Load Operations


ACs - Airports Series

AC 150/5000-9A Announcement of Availability Report No. DOT/FAA/PP/92-5, Guidelines for the Sound Insulation of Residences Exposed to Aircraft Operations

AC 150/5000-13A Announcement Of Availability: RTCA Inc., Document RTCA-221

AC 150/5000-15B Announcement of Availability of Airport-Related Research and Development Products

AC 150/5000-16 Announcement of Availability of the Guide for Private Flyers - U.S. International Airports

AC 150/5000-17 Critical Aircraft and Regular Use Determination

AC 150/5020-1 Noise Control and Compatibility Planning for Airports

AC 150/5020-2 Guidance on the Balanced Approach to Noise Management

AC 150/5050-4A Community Involvement in Airport Planning

AC 150/5050-8 Environmental Management Systems for Airport Sponsors

AC 150/5060-5 Airport Capacity And Delay

AC 150/5070-6B Airport Master Plans

AC 150/5070-7 The Airport System Planning Process

AC 150/5100-13C Development of State Aviation Standards for Airport Pavement Construction

AC 150/5100-14E Architectural, Engineering, and Planning Consultant Services for Airport Grant Projects

AC 150/5100-17 Land Acquisition and Relocation Assistance for Airport Improvement Program Assisted Projects (Consolidated through Change 7)

AC 150/5100-19D Guide for Airport Financial Reports Filed by Airport Sponsors

AC 150/5100-20 Guidance on the Extraction of Oil and Gas on Federally Obligated Airports

AC 150/5100-21 State Block Grant Program

AC 150/5150-2C Federal Surplus Personal Property Program for Public Airport Purposes

AC 150/5190-4A A Model Zoning Ordinance to Limit Height of Objects Around Airports

AC 150/5190-6 Exclusive Rights at Federally Obligated Airports

AC 150/5190-7 Minimum Standards for Commercial Aeronautical Activities

AC 150/5200-12C First Responders’ Responsibility for Protecting Evidence at the Scene of an Aircraft Accident/Incident

AC 150/5200-18C Airport Safety Self-Inspection

AC 150/5200-28F - Notices to Air Missions (NOTAMs) for Airport Operators

AC 150/5200-29A Announcement Of Availability Of Airport Self-Inspection DVD

AC 150/5200-30D Airport Field Condition Assessments and Winter Operations Safety

AC 150/5200-31C Airport Emergency Plan (Consolidated AC includes Change 2)

AC 150/5200-32B Reporting Wildlife Aircraft Strikes

AC 150/5200-33C Hazardous Wildlife Attractants on or near Airports

AC 150/5200-34A Construction or Establishment of Landfills near Public Airports

AC 150/5200-36B Qualifications for Wildlife Biologist Conducting Wildlife Hazard Assessments and Training Curriculums for Airport Personnel Involved in Controlling Wildlife Hazards on Airports

AC 150/5200-37 Introduction to Safety Management Systems (SMS) for Airport Operators

AC 150/5200-38 Protocol for the Conduct and Review of Wildlife Hazard Site Visits, Wildlife Hazard Assessments, and Wildlife Hazard Management Plans

AC 150/5210-5D Painting, Marking, and Lighting of Vehicles Used on an Airport

AC 150/5210-6D Aircraft Fire Extinguishing Agents

AC 150/5210-7D Aircraft Rescue and Fire Fighting Communications

AC 150/5210-13C Airport Water Rescue Plans and Equipment

AC 150/5210-14B Aircraft Rescue Fire Fighting Equipment, Tools and Clothing

AC 150/5210-15A Aircraft Rescue and Firefighting Station Building Design

AC 150/5210-17C Programs for Training of Aircraft Rescue and Firefighting Personnel

AC 150/5210-18A Systems for Interactive Training Of Airport Personnel

AC 150/5210-19A Driver's Enhanced Vision System (DEVS)

AC 150/5210-20A Ground Vehicle Operations to include Taxiing or Towing an Aircraft on Airports

AC 150/5210-22 Airport Certification Manual (ACM)

AC 150/5210-23 ARFF Vehicle and High Reach Extendable Turret (HRET) Operation, Training and Qualifications

AC 150/5210-24 Airport Foreign Object Debris (FOD) Management

AC 150/5210-25A Performance Specification for Airport Vehicle Runway Incursion Warning Systems (RIWS)

AC 150/5220-9A Aircraft Arresting Systems

AC 150/5220-10E Guide Specification for Aircraft Rescue and Fire Fighting (ARFF) Vehicles

AC 150/5220-16E Automated Weather Observing Systems (AWOS) for Non-Federal Applications - with Change 1

AC 150/5220-17B Aircraft Rescue and Fire Fighting (ARFF) Training Facilities

AC 150/5220-18A Buildings for Storage and Maintenance of Airport Snow and Ice Control Equipment and Materials

AC 150/5220-20A Airport Snow and Ice Control Equipment

AC 150/5220-21C Aircraft Boarding Equipment

AC 150/5220-22B Engineered Materials Arresting Systems (EMAS) for Aircraft Overruns

AC 150/5220-23A Frangible Connections

AC 150/5220-24 Foreign Object Debris Detection Equipment

AC 150/5220-25 Airport Avian Radar Systems

AC 150/5220-26 Airport Ground Vehicle Automatic Dependent Surveillance - Broadcast (ADS-B) Out Squitter Equipment

AC 150/5230-4C Aircraft Fuel Storage, Handling, and Dispensing on Airports

AC 150/5300-7B FAA Policy on Facility Relocations Occasioned by Airport Improvements or Changes

AC 150/5300-13B Airport Design

AC 150/5300-14D Design of Aircraft Deicing Facilities

AC 150/5300-15A Use Of Value Engineering For Engineering And Design Of Airport Grant Projects

AC 150/5300-16B General Guidance and Specifications for Aeronautical Surveys: Establishment of Geodetic Control and Submission to the National Geodetic Survey

AC 150/5300-17C Standards for Using Remote Sensing Technologies in Airport Surveys (Consolidated to Include Change 1)

AC 150/5300-18B General Guidance and Specifications for Submission of Aeronautical Surveys to NGS: Field Data Collection and Geographic Information System (GIS) Standards

AC 150/5300-19 Airport Data and Information Program

AC 150/5320-5D Airport Drainage Design

AC 150/5320-6G Airport Pavement Design and Evaluation

AC 150/5320-12C Measurement, Construction, and Maintenance of Skid Resistant Airport Pavement Surfaces

AC 150/5320-15A Management Of Airport Industrial Waste

AC 150/5320-17A Airfield Pavement Surface Evaluation and Rating Manuals

AC 150/5325-4B Runway Length Requirements for Airport Design

AC 150/5335-5C Standardized Method of Reporting Airport Pavement Strength - PCN

AC 150/5340-1M Standards for Airport Markings

AC 150/5340-5D Segmented Circle Airport Marker System

AC 150/5340-18G Standards for Airport Sign Systems

AC 150/5340-26C Maintenance of Airport Visual Aid Facilities

AC 150/5340-30J Design and Installation Details for Airport Visual Aids

AC 150/5345-3G Specification for L-821, Panels for the Control of Airport Lighting

AC 150/5345-5B Circuit Selector Switch

AC 150/5345-7F Specification for L-824 Underground Electrical Cable for Airport Lighting Circuits

AC 150/5345-10H Specification for Constant Current Regulators and Regulator Monitors

AC 150/5345-12F Specification for Airport and Heliport Beacons

AC 150-5345-13B Specification for L-841 Auxiliary Relay Cabinet Assembly for Pilot Control of Airport Lighting Circuits

AC 150/5345-26E FAA Specification for L-823 Plug and Receptacle, Cable Connectors

AC 150/5345-27F FAA Specification for Wind Cone Assemblies

AC 150/5345-28H Precision Approach Path Indicator (PAPI) Systems

AC 150/5345-39E Specification for L-853, Runway and Taxiway Retroreflective Markers

AC 150/5345-42J Specification for Airport Light Bases, Transformer Housings, Junction Boxes, and Accessories

AC 150/5345-43J Specification for Obstruction Lighting Equipment

AC 150/5345-44K Specification for Runway and Taxiway Signs

AC 150/5345-45C Low-Impact Resistant (LIR) Structures

AC 150/5345-46E Specification for Runway and Taxiway Light Fixtures

AC 150/5345-47C Specification for Series to Series Isolation Transformers for Airport Lighting Systems

AC 150/5345-49D Specification L-854, Radio Control Equipment

AC 150/5345-50B Specification for Portable Runway and Taxiway Lights

AC 150/5345-51B Specification for Discharge-Type Flashing Light Equipment

AC 150/5345-52A Generic Visual Glideslope Indicators (GVGI)

AC 150/5345-53D Airport Lighting Equipment Certification Program

AC 150/5345-54B Specification for L-884, Power and Control Unit for Land and Hold Short Lighting Systems

AC 150/5345-55A Specification for L-893, Lighted Visual Aid to Indicate Temporary Runway Closure

AC 150/5345-56B Specification for L-890 Airport Lighting Control and Monitoring System (ALCMS)

AC 150/5360-12F Airport Signing and Graphics

AC 150/5360-13A Airport Terminal Planning

AC 150/5360-14A Access to Airports by Individuals with Disabilities

AC 150/5370-2G Operational Safety on Airports During Construction

AC 150/5370-10H Standard Specifications for Construction of Airports

AC 150/5370-11B Use of Nondestructive Testing in the Evaluation of Airport Pavements

AC 150/5370-12B Quality Management for Federally Funded Airport Construction Projects

AC 150/5370-13A Off-Peak Construction of Airport Pavements Using Hot-Mix Asphalt

AC 150/5370-14B Hot Mix Asphalt Paving Handbook

AC 150/5370-15B Airside Applications for Artificial Turf

AC 150/5370-16 Rapid Construction of Rigid (Portland Cement Concrete) Airfield Pavements

AC 150/5370-17 Airside Use of Heated Pavement Systems

AC 150/5380-6C Guidelines and Procedures for Maintenance of Airport Pavements

AC 150/5380-7B Airport Pavement Management Program (PMP)

AC 150/5380-9 Guidelines and Procedures for Measuring Airfield Pavement Roughness

AC 150/5390-2C Heliport Design

AC 150/5395-1B Seaplane Bases


ACs - Aeronautical Charts and Flight Information Publications

AC 211-2 Recommended Standards for IFR Aeronautical Charts


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