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Number Office Title Date
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
90-93B AJT-0 Operating Procedures for Airport Traffic Control Towers (ATCT) that are not Operated by, or Under Contract with, the United States (Non-Federal)

This advisory circular (AC) recommends publications, administrative, and operational procedures that will assist in the management of a non-Federal ATCT (NFCT).

04-22-2013
90-93A ATP-40 Operating Procedures for Airport Traffic Control Towers (ATCT) that are not Operated by, or Under Contract with, the United States (Non-Federal) Recommends publications, administrative and operational procedures that will assist in the management of a non-federal ATCT (NFCT). 11-15-1999
90-91K AJR-1 North American Route Program Provides guidance to users of the National Air Space System for participation in the North American Route Program (NRP). 12-11-2008
90-89A AFS-340 Amateur-Built Aircraft and Ultralight Flight Testing Handbook Provides suggestions and safety-related recommendations to assist amateur and ultra-light builders in developing individualized aircraft flight test plans. It includes flight testing recommendations for canard-type and ultra-light aircraft. SN 050-007-01087-7 05-24-1995
90-87 AFS-840 Helicopter Dynamic Rollover Familiarize the helicopter pilot/instructor and pilot school personnel of the hazards associated with dynamic rollover. 01-27-1986
90-80B AFS-420 Approval of Offshore Standard Approach Procedures (OASP), Airborne Radar Approaches (ARA), and Helicopter En Route Descent Areas (HEDA) Provides criteria and describes methods for obtaining to use Offshore Standard Approach Procedures, Airborne Radar Approaches, and Helicopter Enroute Areas. 04-12-1992
90-75 AFS-310 Strobe Light System Inspection Advises the general aviation community of the importance of proper maintenance of capacitive discharge strobe light systems which are installed within or near fuel systems. 02-10-1977
90-67B ATP-129 Light Signals from the Control Tower for Ground Vehicles, Equipment, and Personnel Provides the aviation community with the meaning of the light signals used when communicating with ground vehicles, equipment, and personnel on the airport movement area from the control tower. 08-25-1994
90-66A AFS-820 Recommended Standards Traffic Patterns for Aeronautical Operations at Airports without Operating Control Towers Calls attention to regulatory requirements and recommended procedures for aeronautical operations at airports without operating control towers. It recommends traffic patterns and operational procedures for aircraft, lighter than air, glider, parachute, rotorcraft, and ultra-light vehicle operations where such use is not in conflict with existing procedures in effect at those airports. 08-26-1993
90-58C AFS-310 VOR Course Errors Resulting from 50 kHz Channel Mis-Selection Provides information concerning a potentially hazardous situation when a 200 channel VOR receiver is inadvertently mistuned by 50 kHz from the frequency of a 100 kHz ground station. 04-07-1975
90-50D ASR-520 Requirements for 760-Channel VHF Radio for Aeronautical Operations Encourages aircraft owners to upgrade their air-ground radio communication systems. Describes and upgrades civil air traffic control frequencies in the very high frequency (118.000 to 136.975 MHz) band. The 136.000 to 136.975 MHz band became available for aeronautical use on January 1, 1990. 04-09-1992
90-48C AFS-820 Pilots' Role in Collision Avoidance Alerts all pilots to the potential hazards of midair collision and near midair collision, and to emphasize those basic problem areas related to the human causal factors where improvements in pilot education, operating practices, procedures, and improved scanning techniques are needed to reduce midair conflicts. 03-18-1983
90-45A AFS-400 Approval of Area Navigation Systems for use in the U.S. National Airspace System

Provides guidelines for implementation of two-dimensional area navigation (2D RNAV) within the U.S. National Airspace System (NAS). Provides for both VOR/DME dependent systems and self-contained systems such as Inertial Navigation Systems (INS).

AC 20-138C - Airworthiness Approval of Positioning and Navigation Systems supersedes the airworthiness considerations in AC 90-45A, Approval of Area Navigation Systems for use in the U.S. National Airspace System. Equipment previously approved per the airworthiness guidance in AC 90-45A is still valid for the operations and conditions stated in their approvals.

 

02-21-1975
90-42F AFS-820 Traffic Advisory Practices at Airports without Operating Control Towers Contains good operating practices and procedures for use when approaching or departing airports without an operating control tower and airports that have control towers operating part time. Includes changes in radio frequencies and phraseology. 05-21-1990
90-34 AFS-840 Accidents Resulting from Wheelbarrowing in Tricycle Gear Equipped Aircraft Explains “wheel barrowing”, the circumstances under which it is likely to occur, and recommended corrective action. 02-27-1968
90-23G AFS-400 Aircraft Wake Turbulence

This advisory circular (AC) presents basic information on wake vortex behavior, alerts pilots to the hazards of aircraft wake turbulence, and recommends operational procedures to avoid wake turbulence encounters.

02-10-2014
70/7460-1K AJR-33 Obstruction Marking and Lighting 02-01-2007
70-1 AFS-400/ATO-R Outdoor Laser Operations 12-30-2004
65-33 AFS-300 Development of Training/Qualification Programs for Composite Maintenance Technicians

This document is intended as a guideline for organizations to develop a formal training program for qualification of composite technicians. This advisory circular (AC) contains recommendations for the experience, training, qualification, and examination of persons performing maintenance and repair of aircraft composite structures or other aviation composite components. It recommends criteria for the qualification of personnel to be able to understand the technical principles involved in the maintenance and repair of aircraft composites. This document applies to those individuals directly responsible for providing training, supervision, or oversight of composite maintenance personnel. Organizations may use the information contained in this AC to develop a written program describing the guidelines used to train and qualify personnel.This AC provides a means, but not the only means, of developing a composite maintenance training program.

08-03-2011
65-32A AFS-300 Certification of Repairmen (Light-Sport Aircraft)

This advisory circular (AC) provides the public with information regarding the certification of repairmen (light-sport aircraft (LSA)) with maintenance and inspection ratings, the acceptability of training courses, and the continued airworthiness of LSA. The guidance contained in this AC is based on the Final Rule, Certification of Aircraft and Airmen for the Operation of Light-Sport Aircraft, which was published in the Federal Register (FR) on July 27,2004. The rule became effective September 1,2004.

02-08-2013
65-31B AFS-300 Training, Qualification, and Certification of Nondestructive Inspection Personnel

This advisory circular (AC) contains recommendations for the experience, training, qualification, examination, and certification of nondestructive inspection (NDI) personnel for the inspection of aircraft, engines, propellers, accessories, and other aviation components. It recommends criteria for the qualification of personnel requiring appropriate knowledge of the technical principles underlying the nondestructive tests they perform. This document applies to those individuals directly responsible for technical adequacy of the NDI methods used, as well as those persons or organizations providing training, supervision, or oversight of NDI personnel. Organizations should have a written program describing the guidelines used to train, qualify, and certify personnel. Inspection personnel qualified under this document may be eligible for Federal Aviation Administration (FAA) repairman’s certification with an NDI rating.

02-24-2014
65-30A AFS-305 Overview of the Aviation Maintenance Profession To provide information to prospective airframe and powerplant mechanics and other persons interested in the certification requirements, application procedures, and the mechanic written, oral, and practical tests. 11-09-2001
65-26D AFS-350 Charles Taylor “Master Mechanic” Award

This revised advisory circular (AC) clarifies the administrative procedures to ensure that applications for the Charles Taylor “Master Mechanic” Award are properly submitted and processed. This revision also outlines procedures to ensure that an award recipient’s information is submitted to the Federal Aviation Administration (FAA) Safety Team (FAASTeam) National Resource Center (NRC) for inclusion in the “Roll of Honor” found on FAASafety.gov.

08-04-2009
65-25E AFS-300 William (Bill) O'Brien Aviation Maintenance Technician Awards Program This advisory circular (AC) outlines the participation requirements for the Federal Aviation Administration (FAA) William (Bill) O’Brien Aviation Maintenance Technician (AMT) Awards Program. This revision to the AC provides instructions for AMTs and the employers of AMTs participating in the online William (Bill) O’Brien Awards Program and addresses all the changes to the program. 06-03-2009
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