|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|
Use of Remote On-Ground Ice Detection System
This advisory circular (AC) provides a standard means for a certificate holder to obtain approval for use of a Remote On-Ground Ice Detection System (ROGIDS). The purpose of this system is to identify clear ice after deicing as a replacement for or to augment the post-deicing visual and tactile check of aircraft surfaces. This approval is essential to the ground-deicing/anti-icing program contained within Title 14 of the Code of Federal Regulations (14 CFR) part 121, § 121.629, part 135, § 135.227, or part 125, § 125.221
|170-6C||ASM-500||Use of Radionavigation Land Test Station and Signal Generators Gives information as to the frequencies on which the FAA will authorize and the FCC will license radionavigation land test stations. It also discusses the interference potential of signal generators operating in aeronautical bands of the radio spectrum and how this interference can be alleviated.||02-13-1981|
Use of Portable Electronic Devices Aboard Aircraft
This advisory circular (AC) provides aircraft owners, operators, and the public with information and guidance for assistance in compliance with Title 14 of the Code of Federal Regulations (14 CFR) part 91, § 91.21. Section 91.21 was established because of the potential for portable electronic devices (PED) to interfere with aircraft navigation or communication systems. It prohibits the operation of PEDs not installed aboard U.S.-registered civil aircraft while operating under instrument flight rules (IFR). This rule permits the use of specified PEDs and other devices that the operator of the aircraft has determined will not interfere with the safe operation of that aircraft. The recommendations contained herein are one means, but not the only means, of complying with § 91.21 requirements pertaining to the operation of PEDs.
Use of Nondestructive Testing in the Evaluation of Airport Pavements
Focuses on nondestructive testing (NDT) equipment that measures pavement surface deflections after applying a static or dynamic load to the pavement. It also briefly introduces other types of nondestructive measuring equipment to illustrate how supplementing NDT data with other test data may improve the quality and reliability of the pavement evaluation. This version updates Chapter 8, NDT-Based Evaluation and Design Updates, to reflect the requirements of the pavement design program FAARFIELD rather than the previous design program LEDFAA.
See also Airport Design Software.
Use of Manufacturers’ Maintenance Manuals
This advisory circular (AC) informs owners and operators about the usefulness of manufacturer’s maintenance manuals for servicing, repairing, and maintaining aircraft, engines, and propellers.
Use of Liquid Water Equivalent System to Determine Holdover Times or Check Times for Anti-Icing Fluids
This advisory circular (AC) provides guidance for the Federal Aviation Administration’s (FAA) standard for a Liquid Water Equivalent System (LWES). This AC applies to anyone proposing to design, procure, construct, install, activate, or maintain an LWES. An LWES is an automated weather measurement system that determines the Liquid Water Equivalent (LWE) rate in conditions of frozen or freezing precipitation. The LWE rate is used by the system with the appropriate endurance time (ET) regression equations and regression coefficients specified in an FAA-approved current database at http://220.127.116.11/RegressionInformation.html to determine the holdover time (HOT) or check time (CT) for an aircraft’s applied anti-icing fluid (Society of Automotive Engineer (SAE) Types I, II, III, and IV). Thus, the LWES incorporates a Holdover Time Determination System (HOTDS) or Check Time Determination System (CTDS). The HOT is used to determine how long a fluid would provide protection assuming that the current conditions do not change. The CT is used to determine the fluid’s current protection capability, while incorporating varying weather conditions.
Use of Cockpit Displays of Digital Weather and Aeronautical Information
This advisory circular (AC) provides guidance to flightcrew members and other airmen on the use of data link to access Flight Information Services (FIS). This AC addresses both the Federal Aviation Administration (FAA) FIS Broadcast (FIS-B) provided through the Automatic Dependent Surveillance – Broadcast (ADS-B) Universal Access Transceiver (UAT) network and non-FAA FIS systems provided through commercial data link services.
a. Flight Information Services (FIS). FIS is a service that provides Meteorological Information (METI) and Aeronautical Information (AI) to enhance pilot awareness of weather and/or airspace constraints while providing information for decision support tools and improving safety. METI and AI data link services enable flightcrews to support the Next Generation Air Transportation System (NextGen) concepts of information sharing and provide airmen with a common operating picture necessary to support the evolving global Air Traffic Management (ATM) concepts.
b. Advantages of FIS METI and AI. FIS of METI and AI can augment pilot voice communications with Flight Service Stations (FSS), other air traffic control (ATC) facilities, airline dispatch centers, flight following facilities or other Operation Control Centers (OCC), typically referred to as System Operations Control (SOC). In addition, Internet connectivity provides the capability for Baseline Synchronization Services (BSS) to be utilized to update the aircraft’s navigational and other databases prior to flight.
|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|
|91-62A||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|
Use of Child Restraint Systems on Aircraft
This advisory circular (AC) provides information and practices regarding the use of child restraint systems (CRS) on aircraft. The Federal Aviation Administration (FAA) intends for operators to use this as a resource during the development, implementation, and revision of an air carrier’s standard operating procedures (SOP), Web sites and training programs regarding the use of CRSs.
FAA Initiatives. This AC is one of several FAA initiatives designed to address safety concerns of the National Transportation Safety Board (NTSB). It is a part of the FAA’s ongoing commitment to educate and inform aircraft operators, crewmembers, and airline passengers regarding the use of CRSs on aircraft in order to encourage and increase the use of approved CRSs. For more information, refer to the following FAA Web site: http://www.faa.gov/passengers/fly_children/.
Regulatory Requirements. In addition, this AC provides information to air carriers conducting Title 14 of the Code of Federal Regulations (14 CFR) part 121 operations about the requirement to make available on their Web sites the width of the narrowest and widest passenger seats in each class of service for each make, model, and series (M/M/S) of airplane used in passenger-carrying operations. If an air carrier does not have a Web site, the air carrier is not required to establish a Web site in order to comply with this regulation.
Use of Automobile Gasoline in Agricultural Aircraft
Sets forth acceptable conditions under which automobile gasoline (autogas) may be used in restricted category agricultural aircraft powered by Pratt and Whitney R-985 and R-1340 radial engines, and being used in agricultural operations under Federal Aviation Regulations Part 137.
|61-47A||AFS-820||Use of Approach Slope Indicators for Pilot Training This advisory circular informs pilot schools, flight instructors, and student IJilots of the recommendation of the Federal Aviation Administration for the use of approach slope indicator systems for pilot training.||03-26-1979|
|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|
|20-29B||ANE-100||Use of Aircraft Fuel Anti-icing Additives Provides information on the use of anti-icing additives PFA-55MB and Mil-I-27686 as an acceptable means of compliance with the FARs that require assurance of continuous fuel flow under conditions where ice may occur in turbine aircraft fuel systems.||01-18-1972|
|150/5300-15A||AAS-100||Use Of Value Engineering For Engineering And Design Of Airport Grant Projects Provides guidance on using value engineering (VE) in airport projects funded under the Federal Aviation Administration's (FAA's) Airport Grant program.||09-30-2008|
Upset Prevention and Recovery Training
This advisory circular (AC) describes the recommended training for airplane Upset Prevention and Recovery Training (UPRT). The goal of this AC is to provide recommended practices and guidance for academic and flight simulation training device (FSTD) training for pilots to prevent developing upset conditions and ensure correct recovery responses to upsets. The AC was created from recommended practices developed by major airplane manufacturers, labor organizations, air carriers, training organizations, simulator manufacturers, and industry representative organizations. This AC provides guidance to Title 14 of the Code of Federal Regulations (14 CFR) part 121 air carriers implementing the regulatory requirements of §§ 121.419, 121.423, 121.424, and 121.427. Although this AC is directed to air carriers to implement part 121 regulations, the FAA encourages all airplane operators, pilot schools, and training centers to implement UPRT and to use this guidance, as applicable to the type of airplane in which training is conducted.
Although a stall is by definition an upset, stall prevention and recovery training is contained in the current edition of AC 120-109, Stall Prevention and Recovery Training.
United States—Canadian Bilateral Aviation Safety Agreement Maintenance Implementation Procedures
This advisory circular (AC) provides information relating to the Bilateral Aviation Safety Agreement (BASA) and accompanying Maintenance Implementation Procedures (MIP) between the United States and Canada. This AC is not mandatory and does not constitute a regulation. This AC presents recommendations for an acceptable means, but not the only means, to comply with the current revision of the MIP.
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
National Aviation Standard for the Very High Frequency Omnidirectional Radio Range (VOR)/Distance Measuring Equipment (DME)/Tactical Air Navigation (TACAN) Systems
This AC has NO Changes - Database Error noting Change 1
|25.807-1||ANM-114||Uniform Distribution of Exits Provides guidance material for acceptable means, but not the only means, of demonstrating compliance with the requirements for distributing required passenger emergency exits uniformly. Addresses only those passenger-carrying airplanes, including mixed passenger/cargo (“combi”) configurations, with a type certification basis for Amendment 25-15 or later with respect to Section 25.807(c) or airplanes with an earlier type certification basis required by Section 25.2 to meet Section 25.807, Amendment 25-15. Does not address airplanes with only one pair of required exits.||08-13-1990|
|90-95||AFS-800||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.||02-07-1995|
|103-6||AFS-820||Ultralight Vehicle Operations-Airports, ATC, and Weather Provides guidance for the operation of ultralight vehicles in the U.S. Information includes airport and flight park operations, how to work with ATC, and the availability of weather services.||06-23-1983|
|20-65A||AIR-200||U.S. AIRWORTHINESS CERTIFICATES AND AUTHORIZATIONS FOR OPERATION OF DOMESTIC AND FOREIGN AIRCRAFT Provides general information and guidance concerning issuance of airworthiness certificates for U.S. registered aircraft, and issuance of special flight authorizations for operation in the United States of foreign aircraft not having standard airworthiness certificates issued by the country of registry.||07-08-2004|
U.S Terminal and En Route Area Navigation (RNAV) Operations with Change 2
This advisory circular (AC) provides operational and airworthiness guidance for operation on U.S. Area Navigation (RNAV) routes, Instrument Departure Procedures (DPs), and Standard Terminal Arrivals (STARs). Operators and pilots should use the guidance in this AC to determine their eligibility for these U.S. RNAV routes and procedures. In lieu of following this guidance without deviation, operators may elect to follow an alternative method, provided the alternative method is found to be acceptable by the Federal Aviation Administration (FAA). For the purpose of this AC, "compliance" means meeting operational and functional performance criteria. Mandatory terms in this AC such as "must" are used only to ensure applicability of these particular methods of compliance when the acceptable means of compliance described are used. This AC does not change, add, or delete regulatory requirements or authorize deviations from regulatory requirements.
|21.17-2A||ACE-100||Type Certification-Fixed Wing Gliders (Sailplanes), Including Powered Gliders Provides information and guidance concerning acceptable means of showing compliance with Section 21.17(b) of Part 21 of the Federal Aviation Regulations (FAR) for type certification of gliders and powered gliders. General guidance relative to glider type certification is also provided.||02-10-1993|