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Number Office Title Date
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).

90-114 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.

90-89A 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
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.
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.
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