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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
90-89B AFS-350 Amateur-Built Aircraft and Ultralight Flight Testing Handbook

This advisory circular (AC) provides suggestions and safety related recommendations primarily to assist amateur and ultralight builders in developing individualized aircraft flight-test plans. It also provides guidance for experimental light sport aircraft flight testing after modifications to the aircraft. It provides recommendations and suggestions you can combine with other sources on test flying, such as the aircraft plan/kit manufacturer’s flight testing instructions and other flight testing data. This will help you develop a detailed flight-test plan, tailored for your aircraft and resources.

This AC attempts to make you aware that test flying an aircraft is a critical undertaking, which you should approach with thorough planning, skill, and common sense. The flight-test plan is the heart of all professional flight testing. The plan should account for every hour spent in the flight-test phase and you should adhere to it with the same respect for the unknown that all successful test pilots share. The time allotted for each phase of a personalized flight-test plan may vary, and each phase may have more events or checks than suggested in this AC, but your goals, should be the same. You should add flight-test operational and performance data to the aircraft’s flight manual so you can reference the data prior to each flight.

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
90-42F 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
90-23G 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.

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.

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.

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.

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
65-25E 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
65-24 AFS-350 Certification of a Repairman (General)
CHANGE 1 (09-11-2007)
65-23A AFS-340 Certification of Repairmen (Experimental Aircraft Builders)

 a. This advisory circular (AC) provides information to builders of experimental aircraft concerning repairman certification.

b. This AC provides an acceptable means of complying with the regulations; however, it is not the only means of compliance. This AC is not mandatory and it does not constitute a regulation. When this AC uses mandatory language (e.g., "must" or "may not") it is paraphrasing a regulatory requirement or prohibition. When this AC uses permissive language (e.g., "should" or "may") it describes an acceptable means, but not the only means, of complying with regulations. However, if you use the means described to comply with a regulatory requirement, you must follow it in all respects.

65-15A AFS-630 [Large AC] Airframe and Powerplant Mechanics Airframe Handbook

Designed to familiarize student mechanics with airframe construction, repair, and the operating theory of airframe systems. SN 050-007-00391-9

65-5B AFS-630 Parachute Rigger Senior/Master Certification Guide Provides information to persons interested in becoming certificated parachute riggers. Provides information on how to apply for a parachute rigger certificate and ratings, and assists the applicant in preparing for the written, oral, and practical tests. SN 050-007-00805-8 07-25-1988
65-2D AFS-640 Airframe and Powerplant Mechanics Certification Guide 01-30-1987
61-140 AFS-800 Autorotation Training

The purpose of this advisory circular (AC) is to describe enhanced guidelines for autorotations during rotorcraft/helicopter flight training. The Federal Aviation Administration (FAA) has found a need to raise awareness of the risks inherent in performing autorotations in the training environment, and in particular the 180 degree autorotation. In this AC, the FAA recommends procedures that will mitigate safety risk during autorotations. This information is intended to supplement information about autorotation training found in the current edition of the Helicopter Flying Handbook (HFH), FAA-H-8083-21. This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, of training applicants for a rotorcraft/helicopter airman to meet the qualifications for various rotorcraft/helicopter ratings under Title 14 of the Code of Federal Regulations (14 CFR) part 61.  You may use alternate methods for training if you establish that those methods meet the requirements of the HFH and FAA practical test standards (PTS).


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