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Number Office Title Date
90-114 AFS-400 Automatic Dependent Surveillance-Broadcast (ADS-B) Operations

The Federal Aviation Administration (FAA) has issued a new rule contained in Title 14 of the Code of Federal Regulations (14 CFR) part 91, §§ 91.225 and 91.227. This rule requires Automatic Dependent Surveillance-Broadcast (ADS-B) Out performance when operating in designated classes of airspace within the U.S. National Airspace System (NAS) after January 1, 2020. This advisory circular (AC) provides users of the NAS guidance on a means of conducting flight operations in accordance with §§ 91.225 and 91.227. The Aeronautical Information Manual (AIM) provides an overview of, and the appendices in this AC provide guidance for, additional operations enabled by ADS-B. Appendix 2 contains a list of ADS-B-related definitions.

 The intent of this advisory circular is to facilitate operation using Automatic Dependent Surveillance -Broadcast (ADS) technology in compliance with Title 14 of the Code of Federal Regulation (14 CFR) part 91, &&91.225 and 91.227, which are effective after January 1, 2020.

90-113 AFS-460 Instrument Flight Procedure Validation (IFPV) of Satellite-based Instrument Flight Procedures (IFP)

This advisory circular (AC) provides guidance for conducting Instrument Flight Procedure Validation (IFPV) of Satellite-Based Performance-Based Navigation (PBN) Instrument Flight Procedures (IFP) for both fixed-wing and helicopter aircraft. This also addresses validation of helicopter wide area augmentation system (WAAS) special IFP. This document supplements and does not change the requirements of FAA Order 8200.1, United States Standard Flight Inspection Manual. It describes ground validation, preflight validation (including simulator evaluation and obstacle assessment), and flight validation.

90-112 AFS-460 Development and Submission of Special Instrument Procedures to the FAA

This Advisory Circular (AC) provides guidance for the submission and approval of  special instrument flight procedures that are developed by non-government proponents and submitted to the Federal Aviation Administration (FAA) for review and approval. Special instrument procedures are those procedures developed for specific users and are not processed under Title 14, Code of Federal Regulations (14 CFR), Part 97. Occasionally, the word “must” or similar language is used within this AC where the desired action is deemed critical. The use of such language is not intended to add to, interpret, or relieve a duty imposed by 14 CFR.

90-109 AFS-800 Airmen Transition to Experimental or Unfamiliar Airplanes

This advisory circular (AC) provides information and guidance to owners and pilots of experimental airplanes and to flight instructors who teach in these airplanes. This information and guidance contains recommendations for training experience for pilots of experimental airplanes in a variety of groupings based on performance and handling characteristics. This AC does not address the testing of newly built experimental airplanes. The current edition of AC 90-89, Amateur-Built Aircraft and Ultralight Flight Testing Handbook, provides information on such testing. However, if a pilot is planning on participating in a flight-test program in an unfamiliar experimental airplane, this AC should be used to develop the skills and knowledge necessary to safely accomplish the test program using AC 90-89. This AC may also be useful in planning the transition to any unfamiliar fixed-wing airplanes, including type-certificated (TC) airplanes.

90-108 AFS-400 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).

90-107 AFS-400 Guidance for localizer performance with Vertical Guidance and Localizer


This advisory circular (AC) provides guidance for operators to conduct Title 14 of the Code of Federal Regulations (14 CFR) part 97 instrument flight rules (IFR) Area Navigation (RNAV) Global Positioning System (GPS) instrument approach procedures (IAP) with Localizer Performance with Vertical guidance (LPV) and Localizer Performance without vertical guidance (LP) lines of minima using the wide area augmentation system (WAAS).

90-105 AFS-400 Approval Guidance for RNP Operations and Barometric Vertical Navigation in the U.S. National Airspace System 01-23-2009
90-103 AJR-0 Reporting of Threats in Accordance with the Common Strategy 09-11-2006
90-102A AJR-1 Airspace Flow Program This Advisory Circular replaces AC 90-102 and provides guidance to customers of the National Airspace System (NAS) regarding changes to the traffic management process for managing flights through a constrained area with an Airspace Flow Program (AFP). In this process, traffic managers identify a constraint in the en route system, develop a real-time list of flights that are filed into the constrained area, and implement an AFP. Pilots need to be aware that an AFP distributes expect departure clearance times (EDCT) in order to meter air traffic demand through the area. Examples of constraints include thunderstorm activity, turbulence, and periods of excess demand. The list of flights includes aircraft that have filed flight plans, filed early intent flight plans, or operate in the constrained area based on historical flight plan data. 05-30-2008
90-102 AJR-1 Airspace Flow Program 05-01-2006
90-101A AFS-400 Approval Guidance for RNP Procedures with Special Aircraft and Aircrew Authorization Required (SAAAR)

This advisory circular (AC) provides airworthiness and operational approval guidance material for aircraft operators conducting Title 14 of the Code of Federal Regulations (14 CFR) part 97 Area Navigation (RNAV) Required Navigation Performance (RNP) instrument approach procedures (IAP) with Authorization Required (AR), charted as "RNAV (RNP) RWY XX." Hereafter, refer to these procedures as "RNP AR" within this AC. Operational approvals obtained under the guidelines of this AC also apply to existing RNAV (RNP) IAP with special aircraft and aircrew authorization required (SAAAR). As current RNAV (RNP) SAAAR instrument approach charts are revised or amended, they will be updated to reflect AR.

90-100A AFS-400 U.S Terminal and En Route Area Navigation (RNAV) Operations with Change 1

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.

90-99 ATA-301 High Altitude Airspace Redesign Phase 1 09-22-2003
90-96A AFS-400 Approval of U.S. Operators and Aircraft to Operate Under Instrument Flight Rules (IFR) in European Airspace Designated for Basic Area Navigation (B-RNAV) and Precision Area Navigation (P-RNAV)

Provides guidance regarding on-board Area Navigation (BRNAV) equipment requirements for operators of U.S. registered civil aircraft, operating in a Basic Area Navigation (BRNAV) environment in the European region.

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
90-93A 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
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