Commercial Space Advisory Circulars (ACs)
The Advisory Circular (AC) system provides a single, uniform, agency-wide system that the Federal Aviation Administration (FAA) uses to deliver advisory material to FAA customers, industry, the aviation and aerospace communities, and the public.
Commercial Space DRAFT Advisory Circulars (ACs)
The public has an opportunity to comment on DRAFT commercial space advisory circulars while they are on notice in the Federal Register. We will review all comments received and consider them for incorporation in the final document.
Published ACs
Advisory Circular: AC 413.13-1 - Guidance on Submitting a Complete Enough and Complete Application for a Vehicle Operator License
Issued: 12/18/2023
AC: PDF
Advisory Circular: AC 431.35-2A - Reusable Launch and Reentry Vehicle System Safety Process
Issued: 7/20/2005
Advisory Circular: AC 437.55-1 - Hazard Analysis for the Launch or Reentry of a Reusable Suborbital Rocket Under an Experimental Permit
Issued: 4/20/2007
Advisory Circular: AC 437.73-1 - Anomaly Reporting and Corrective Action for a Reusable Suborbital Rocket Operating Under an Experimental Permit
Issue Date: 4/20/2007
450.101-1B High Consequence Event Protection
Revision B Issued 4/9/2024
Revision A Issued 5/20/2021
Workshop Slides: PDF
Workshop Video: Video
450.103-1 Safety System Program
Issued: 9/7/2021
10/13/2021 Workshop Slides: PDF
10/13/2021 Workshop Video: Video
5/9/2023 Workshop Slides: PDF
5/9/2023 Workshop Video: Video
450.107-1 Hazard Control Strategies
Issued: 7/27/2021
6/23/2021 Workshop Slides: PDF
5/11/2023 Workshop Slides: PDF
5/11/2023 Workshop Video: Video
450.108-1 Flight Abort Rule Development
Issued: 7/27/2021
Workshop Slides: PDF
Workshop Video: Video
Advisory Circular: 450.109-1 Flight Hazard Analysis
Issued: 8/05/2021
8/25/2021 Workshop Slides: PDF
8/25/2021 Workshop Video: Video
5/16/2023 Workshop Slides: PDF
5/16/2023 Workshop Video: Video
Advisory Circular: 450.110-1 Physical Containment as a Hazard Control Strategy
Issued: 9/27/2022
AC: PDF
AC 450.115-1B High Fidelity Flight Safety Analysis
Issued: 8/2/2024
AC 450.115-2 Describing Flight Safety Analysis Methods
Issued: 9/20/2024
Advisory Circular: 450.117-1 Trajectory Analysis for Normal Flight
Issued: 8/19/2021
Workshop Slides: PDF
Workshop Video: Video
Advisory Circular: AC 450.137-1 De Minimis Far Field Overpressure Blast Effects Analysis
Issued: 9/10/2024
AC: PDF
Advisory Circular: 450.141-1A Computing Systems and Software
Issued: 8/18/2021
AC: PDF
5/18/2023 Workshop Slides: PDF
5/18/2023 Workshop Video: Video
Advisory Circular: 450.167-1 Tracking for Launch and Reentry Safety Analysis
Issued: 9/29/2022
AC: PDF
Advisory Circular: AC 450.169-1 - Launch and Reentry Collision Avoidance Analysis
Issued: 8/10/2023
Advisory Circular: 450.173-1 Part 450 Mishap Plan – Reporting, Response, and Investigation Requirements
Issued: 8/12/2021
Workshop Slides: PDF
Workshop Video: Video
Advisory Circular: 450.179-1 Ground Safety
Issued: 9/22/2021
Workshop Slides: PDF
Workshop Video: Video
Advisory Circular: 450.3-1 Definition of Launch and Scope of a Vehicle Operator License
Issued: 9/28/2022
AC: PDF
Advisory Circular: AC 450.31-1 - Applying for FAA Determination on Policy or Payload Reviews
Issued: 8/10/2023
AC: PDF
Advisory Circular: AC 450.45-1 - Launch and Reentry of Space Nuclear Systems
Issued: 10/20/2023
AC: PDF
Advisory Circular: AC 450.45-2 - Compliance when Contracting with a Federal Entity
Issue Date: 3/11/2025
Advisory Circular: AC 460.15-1 - Human Factors Considerations in Commercial Space Flight
Issued: 8/12/2024
450 ACs Combined in one Portfolio PDF file for download is available here then click on the download icon. 
The FAA reviews comments on each of these published documents when received. The FAA will issue an updated version if warranted based on comments received. Each guidance document contains a feedback form with instructions on how to provide feedback at any time during the process. *Feedback for ACs may also be submitted via the AC feedback form (PDF) and by emailing the form to 9-ast-asz210-directives@faa.gov. Please include the AC number/title in the subject line.