Ozone-depleting substances, including chlorofluorocarbons (CFCs), have been shown to deplete
the Earth’s stratospheric ozone layer resulting in adverse environmental damage and health effects by
exposing the Earth to the sun’s harmful ultraviolet radiation as well as contributing to global climate
change. Concerns about the formation of an “ozone hole” over the Antarctic in the early 1980s led to
the signing of an international agreement, the Montreal Protocol on Substances that Deplete the Ozone
Layer, in 1987 (Montreal Protocol). The Kigali Amendment was adopted to phase down the
production and consumption of hydrofluorocarbons (HFCs) worldwide, in addition to CFCs, in 2016.
The Montreal Protocol and the national laws implementing it are working. Ozone-depleting
substances in the atmosphere have begun to decrease, and Earth’s protective ozone layer is showing
signs of recovery. In recent years, new regulations have also expanded to tracking and mitigating
fugitive emissions from greenhouse gases that are non-ozone-depleting substitutes as well.

This notice supplements Federal Aviation Administration (FAA)
Order 8100.15B, Organization Designation Authorization Procedures, by providing instructions
and procedures intended to eliminate or minimize ODA holder interference with UMs
performing their authorized functions and to ensure free communication between UMs and the
FAA. The notice also updates certain instructions and procedures for FAA personnel in
evaluating applications submitted for ODA under the procedural requirements set forth in
Title 14 of the Code of Federal Regulations (14 CFR) part 183 subpart D and conducting
oversight of ODA holders approved under subpart D. To the extent that this notice conflicts with
Order 8100.15B, the contents of this notice supersede the order.

This notice supplements all policy, guidance, and documents
impacted by the structural and organizational changes for the Future of Flight Standards (FFS)
transformation where references to certain organizational entities are no longer valid. This notice
reissues and expands on Notice N 8900.598, Interim Policy on the Effects of the Future of Flight
Standards (FFS) Initiative on Current Policy, Guidance, and Documents, dated
September 14, 2021.

This notice is to notify all Principal Operations Inspectors (POI) of
changes to the Special Pilot-In-Command (PIC) Qualification Airports List.

This Advisory Circular (AC) provides an acceptable means, but not the only means, for United
States airports who choose to develop and maintain an accepted voluntary Federal Aviation
Administration (FAA) Low Visibility Operations/Surface Movement Guidance and Control
Systems (LVO/SMGCS) Plan under Title 14 of the Code of Federal Regulations (14 CFR) part
91 and 139. The LVO/SMGCS program focuses on enhancing safe taxi operations during
visibility conditions of less than Runway Visual Range (RVR) 1200 feet (350 meters).

This AC provides guidance for developing a software management program and showing compliance with applicable regulations related to continued airworthiness when managing aircraft software during maintenance activities.