Uus of Pyrotechnic isual Distress Signaling Devices
This advisory circular (AC) suggests standards and procedures for the acquisition, use, and storage of pyrotechnic visual distress signaling devices that are intended for use in aircraft emergencies.
Using Electronic Modeling Systems as Primary Type Design Data
This AC provides information and guidance on developing procedures for using electronic modeling systems in design, manufacture, installation, and inspection processes. It applies to applicants for Type Certificates (TCs), Amended Type Certificate (ATCs), Supplemental Type Certificates (STCs), Parts Manufacturer Approval (PMA), Technical Standard Order Authorizations (TSOA), major alterations, and major repairs. In this AC, we explain how you can submit a proposal to use electronic modeling system data instead of (or in addition to) traditional paper format for the technical data required for initial and post certification activities. We identify the minimum criteria for using electronic type design data, and include requirements for how to access and present the data. In this AC, we define an “electronic modeling system” as a three?dimensional (3-D) modeling system.
For Federal Aviation Administration (FAA) certification applicants, this AC mirrors our procedures in Order 8000.79, Use of Electronic Technology and Storage of Data, and Guide FAA-IR-01?01A, Aircraft Certification Guide for the Use of Electronic Technology and Alternative Methods of Storing Information. This AC must be used in conjunction with Order 8000.79 and Guide FAA-IR-01-01A.
This AC is not mandatory and does not constitute a regulation. We describe acceptable means, though it is not the only means, for using electronic modeling systems in design, manufacture, installation, and inspection processes. If you use the means described in this AC, you must follow it in its entirety
Use of suitable Area navigation (RNAV) system on Conventional Routes and Procedures
This advisory circular (AC) provides operational and airworthiness guidance regrading the suitablity and use of RNAV systems while operating on or transitioning to, conventional i.e. non-RNAV, routes and procedures within the United States (US) National Airspace System (NAS).
Use of Society of Automotive Engineers (SAE) Class H11 Bolts
Provides guidance on the use of SAE Class H11 bolts in primary structure on all aircraft, including gliders and manned free balloons, and on aircraft engines and propellers.
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.
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
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.
Use of Portable Electronic Devices Aboard Aircraft
Provides aircraft operators with information and guidance for assistance in the compliance to FAR Section 91.21.
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
Informs owners and operators about the usefulness of manufacturers’ maintenance manuals for servicing, repairing, and maintaining aircraft, engines and propellers.
Use of Cockpit Displays of Digital Weather and Operational Information
This Advisory Circular provides guidance to aircraft flight crewmembers and other airmen for the use of Flight Information Services Data Link (FISDL) systems
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).
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.
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. We intend for operators to use this as a resource during the development, implementation, and revision of an air carrier’s standard operating procedures (SOP) and training programs regarding the use of CRSs. This AC is one of several Federal Aviation Administration (FAA) initiatives designed to address safety concerns of the National Transportation Safety Board (NTSB). In addition, 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, see the following FAA Web site: http://www.faa.gov/passengers/fly_children/crs/.
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.
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.
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).
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.
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.
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.
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.
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.
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.
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.
U.S Terminal and En Route Area Navigation (RNAV) Operations
This advisory circular provides operational and airworthiness guidance regarding operation on U.S. Area Navigation (RNAV) routes, Standard Instrument Departures (SIDs), and Standard Terminal Arrivals (STARs).