The Federal Aviation Administration (FAA) assigned ARAC a new task to develop recommendations to enable the safe use of hydrogen in civil aviation. This notice informs the public of the new ARAC activity and solicits membership for the new Hydrogen Aviation Working Group (HAWG).

Nominations must be submitted electronically (by e-mail) to Dr. Catalin Fotache at Catalin.G.Fotache@faa.gov. The subject line should state “Hydrogen Aviation Working Group Nomination.” The FAA must receive all requests by February 14, 2025, at 4:00pm Eastern Time. The ARAC and the FAA will review the requests and advise you whether or not your request is approved.

In response to Section 320 of the FAA Reauthorization Act of 2024 (Public Law (Pub. L.) 118-63), FAA assigned ARAC a new task to update analysis and recommendations provided by the Rotorcraft Occupant Protection Working Group (ROPWG) in 2018 and provide recommendations to encourage helicopter owners and operators to expedite the installation of crash resistant fuel systems (CRFS) in the aircraft of such owners and operators regardless of original certification and manufacture date. These safety systems are intended to reduce fatal accidents in the rotorcraft fleet. This notice informs the public of the new ARAC activity and solicits membership for the new Rotorcraft Occupant Protection Working Group.

Nominations must be submitted electronically (by email) to Martin R. Crane at Martin.R.Crane@faa.gov. The subject line should state “Rotorcraft Occupant Protection Working Group Nomination.” The FAA must receive all requests by Friday, January 10, at 5:00 pm Eastern Time]. The FAA will review the nominations and advise nominees whether or not their request is approved.

The FAA assigned ARAC a new task for transport category airplane designs. The task is to provide recommendations regarding new or updated standards and guidance material for transport airplane performance and handling characteristics. This notice informs the public of the new ARAC activity for the Flight Test Harmonization Working Group.

The Federal Aviation Administration (FAA) assigned ARAC a new task to enhance the processes for authorizing aircraft for service in commuter and on-demand operations. Certificate holders operating in accordance with Title 14 Code of Federal Regulations (CFR) part 135 must perform an aircraft conformity inspection prior to entering an aircraft into service. This notice informs the public of the new ARAC activity and solicits membership for the new Part 135 Aircraft Conformity Working Group (Part 135 ACWG).

Nominations must be submitted electronically (by E-mail) to Ken Thomas at kenneth.c.thomas@faa.gov. The subject line should state “Part 135 Aircraft Conformity Working Group Nomination.” The FAA must receive all requests by 5:00 pm Eastern Time, on Friday, January 17, 2025. The FAA will review the requests and advise you whether your request is approved.

The Federal Aviation Administration (FAA) assigned ARAC a new task to address the knowledge and skill differences between military aircraft maintenance versus civilian aircraft maintenance for the purpose of recommending airman certification standards and testing requirements. This notice informs the public of the new ARAC activity for the Airman Certification Standards (ACS) Working Group.

This AC provides an acceptable means, but not the only means, to address operational use of Airborne Collision Avoidance Systems (ACAS) in compliance with Title 14 of the Code of Federal Regulations (14 CFR) part 91, 121, 125, 129, and 135 requirements. Title 14 CFR uses the term Collision Avoidance System (CAS) or Traffic Alert and Collision Avoidance System (TCAS) to describe what Title 49 of the Code of Federal Regulations (49 CFR) and the international community has named ACAS. Other traffic awareness systems, such as Automatic Dependent Surveillance-Broadcast (ADS-B) Traffic Advisory System (ATAS), are not covered in this AC. CAS for unmanned aircraft, including Remain Well Clear (RWC) and Detect and Avoid (DAA) systems, are not covered in this AC.

This AC provides guidance for
towbar and towbarless movement of aircraft and applies to all operators under Title 14 of
the Code of Federal Regulations (14 CFR) parts 91, 91 subpart K (part 91K), 121, 125,
129, and 135. The term “certificate holder (CH)” will be used throughout this document
to represent “operators,” “air carriers,” and their agents.