Advisory Circulars
General Operating and Flight Rules
| Number | Office | Title | Date |
|---|---|---|---|
| 91-67 | AFS-820 |
Minimum Equipment Requirements for General Aviation Operations Under FAR Part 91
Describes acceptable methods for the operation of aircraft under Federal Aviation Regulations Part 91 with certain inoperative instrument and equipment, which are not essential for safe flight.
|
06-28-1991 |
| 91-57 | ATO-220 |
Model Aircraft Operating Standards
Outlines, and encourages voluntary compliance with, safety standards for model aircraft operators.
|
06-09-1981 |
| 91-53A | AFS-820 |
Noise Abatement Departure Profile
Describes acceptable criteria for safe noise abatement departure profiles (NADP) for subsonic turbojet-powered airplanes with a maximum certificated gross takeoff weight of more than 75,000 pounds. These procedures provide the user with one means, although not the only means, of establishing acceptable NADP’s. These departure profiles are consistent with the airworthiness standards required by the Federal Aviation Regulations Part 25 for type certification and Part 91 for general airplane operations.
|
07-22-1993 |
| 91-66 | AFS-840 |
Noise Abatement for Helicopters
Presents guidelines intended to assist pilots, operators, managers, and other interested persons in the establishment of effective noise reduction procedures when operating helicopters.
|
06-04-1987 |
| 91-35 | AAM-620 |
Noise, Hearing Damage, and Fatigue in General Aviation Pilots
Acquaints pilots with the hazards of regular exposure to cockpit noise. Especially pertinent are piston-engine, fixed-wing, and rotary-wing aircraft.
|
03-28-1972 |
| 91-70A | AFS-400 |
Oceanic and International Operations
This advisory circular (AC) contains general information and guidance for operators planning oceanic flights, including authorizations needed for operations outside the continental United States. This includes Special Areas of Operation (SAO) such as North Atlantic Minimum Navigation Performance Specifications (NAT/MNPS), Reduced Vertical Separation Minimum (RVSM), Area Navigation (RNAV), and Required Navigation Performance (RNP) airspace. a. Initiatives. In all geographic regions, the evolution of communication, navigation, surveillance and air traffic management (CNS/ATM) is the catalyst for initiatives such as data link, RNP, RNAV, Automatic Dependent Surveillance (ADS), and RVSM.
b. Critical Areas and Procedures. c. Revisions. |
08-12-2010 |
| 91-71 | AFS-820 |
Operation of Hot Air Balloons with Airborne Heaters
Provides guidance for the safe and practical operation of hot air balloons with airborne heaters in compliance with appropriate portions of 14 CFR 91.
|
06-13-1996 |
| 91-44A | AIR-120 |
Operational and Maintenance Practices for Emergency Locator Transmitters and Receivers
Combines and updates material in several Advisory Circulars on the subject of emergency locator transmitters (ELT) receivers for airborne service.
|
12-12-1980 |
| 91-73B | AFS-200 |
Parts 91 and 135 Single Pilot, Flight School Procedures During Taxi Operations
This advisory circular (AC) provides guidelines for the development and implementation of standard operating procedures (SOP) for conducting safe aircraft operations during taxiing to avoid causing a runway incursion. In accordance with the current edition of Federal Aviation Administration (FAA) Order 7050.1, Runway Safety Program, the definition of a runway incursion is, any occurrence at an aerodrome involving the incorrect presence of an aircraft, vehicle, or person on the protected area of a surface designated for the landing and takeoff of aircraft. This AC is intended for use by persons operating aircraft single pilot under Title 14 of the Code of Federal Regulations (14 CFR) parts 91 and 135, and flight schools. The FAA recommends that these guidelines become an integral part of all SOPs, Flight Operations Manuals (FOM), and formal flight training programs. |
07-30-2012 |
| 91-74A | AFS-800 | Pilot Guide: Flight in Icing Conditions | 12-31-2007 |
| 91-68 | AFS-820 |
Pilot Qualification and Operation of all Surplus Military Turbine-Powered Airplanes
Provides information and guidance to pilots who wish to become qualified to operate surplus military turbine-powered airplanes under a letter of authorization, as required by operating limitations issued for this type of aircraft.
|
02-25-1992 |
| 91-55 | AFS-310 |
Reduction of Electrical System Failures following Aircraft Engine Starting
Warns general aviation aircraft owner/pilots and maintenance personnel of possible total electrical system failure following aircraft engine starting.
|
10-28-1980 |
| 91-79 | AFS-800 |
Runway Overrun Prevention
Provides ways for pilots and operators to turbine powered airplanes to identify, understand, mitigate risks associated with runway overruns during the landing phase of flight. It also provides operators with detailed information that may be used to develop company standard operating procedures.
|
11-06-2007 |
| 91-32B | AFS-820 |
Safety in and Around Helicopters
This Advisory Circular (AC) provides safety guidelines for persons associated with helicopter operations and suggests ways to avoid hazards and reduce the risk of accidents. The information in this AC pertains primarily to helicopter operations conducted under the provisions of Title 14 of the Code of Federal Regulations (14 CFR) part 91; however, the safety considerations discussed may be applicable to all helicopter operations. |
02-18-1997 |
| 91-69A | AFS-820 |
Seaplane Safety for FAR Part 91 Operators
Provides revised information to FAR Part 91 seaplane operators regarding seaplane preflight, oral briefings for seaplane passengers, the use of safety belts and shoulder harnesses in seaplanes, escape/egress after capsizing, water survival, and flotation gear for seaplane occupants. This AC generally covers seaplanes engaged in not-for-hire operations. Most for-hire seaplane operations are subject to 14 CFR part 135, as well as part 91.
|
11-19-1999 |
| 91-63C | ATO-R |
Temporary Flight Restrictions (TFRs/TFR)
Describes the types of conditions under which the FAA may impose a temporary flight restriction. Also explains which elements have been delegated authority by the Administrator to issue TFR’s and lists the types of responsible agencies/offices from which the FAA will accept requests to establish TFR’s. Examples of NOTAM’s for each type of TFR are also provided.
|
05-20-2004 |
| 91-37A | AFS-820 |
Truth in Leasing
Provides information and guidance for lessees and conditional buyers of U.S. registered large civil aircraft. If you are planning to charter an airplane take a moment to learn about chartered and leased aircraft.
|
01-08-1974 |
| 91-43 | AFS-223 |
Unreliable Airspeed Indications
Alerts pilots to the possibility of erroneous airspeed/Mach indications that may be caused by blocking or freezing of the pilot system and advises of corrective action that can be taken.
|
06-26-1975 |
| 91-33A | ANE-110 |
Use of Alternate Grades of Aviation Gasoline for Grade 80/87, and Use of Automotive Gasoline
Provides information relating to the use of alternate grades of gasoline when grade 80/87 aviation is not available and the resultant effects of the use of the alternate fuels which have higher TEL (tetraethyl lead) content. Suggestions are offered as acceptable means of avoiding engine operating difficulties when using alternate fuels. This circular also provides suggestions for added safety in the use of automotive gasoline in those aircraft engines and aircraft covered by Supplemental Type Certificates (STCs).
|
07-18-1984 |
| 91-62A | AIR-120 |
Use of Child Seats in Aircraft
Provides information to assist the public in the proper use of child seats aboard aircraft and provides precautions so all occupants are able to exit rapidly from aircraft during emergencies.
|
10-15-1992 |
| 91-78 | AFS-800 |
Use of Class 1 or Class 2 Electronic Flight Bag (EFB)
This advisory circular (AC) provides aircraft owners, operators, and pilots operating aircraft under Title 14 of the Code of Federal Regulations (14 CFR) part 91, with information for removal of paper aeronautical charts and other documentation from the cockpit through the use of either portable or installed cockpit displays (electronic flight bags (EFB).
|
07-20-2007 |
| 91-21 | AFS-330 | Use of Portable Electronic Devices Aboard Aircraft | 10-02-2000 |
| 91.21-1B | AFS-350 |
Use of Portable Electronic Devices Aboard Aircraft
Provides aircraft operators with information and guidance for assistance in the compliance to FAR Section 91.21.
|
08-25-2006 |
| 91-65 | AFS-820 |
Use of Shoulder Harness in Passenger Seats
Provides guidance and information to pilots, passengers, and maintenance personnel regarding the crash survivability aspects of small aircraft equipped with shoulder harnesses and the hazards of modifying seats, adding appendages to seats, and storage of articles, beneath the seats. Recommends inspection and maintenance of seats, lap belts and shoulder harnesses to enhance their effectiveness for crash survivability.
|
08-04-1986 |
| 91-36D | ATO-R |
Visual Flight Rules (VFR) Flight Near Noise-Sensitive Areas
Encourages pilots making VFR flights near noise-sensitive areas to fly at altitudes higher than the minimum permitted by regulation and on flight paths, which will reduce aircraft noise in such area.
|
09-17-2004 |



