Skip to page content
Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

The latest general information on the Coronavirus (COVID-19) is available on Coronavirus.gov. For FAA-specific COVID-19 resources, please visit faa.gov/coronavirus.
United States Department of TransportationUnited States Department of Transportation

Aircraft Certification Service (AIR)
Draft Advisory Circulars (ACs) Open for Comment

Document Title: Airworthiness Approval of Enhanced Vision System, Enhanced Flight Vision System, and Combined Vision System Equipment
Summary: This advisory circular (AC) provides guidance for gaining airworthiness approval for enhanced vision systems in aircraft. Specifically, it provides one acceptable means for complying with Title 14 of the Code of Federal Regulations (14 CFR) part 23, 25, 27, or 29 airworthiness regulations when installing an enhanced vision system (EVS), an enhanced flight vision system (EFVS) and combined vision system (CVS) in an aircraft.
Documents for Download: Draft Document
Draft Document Comment Grid
Reference: AC 20-167B
Comments Due: September 30, 2021
How to Comment: Email comments to:
Trent.prange@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration,
Policy and Innovation Division, System and Equipment Standards Branch, AIR-6B0
950 L'Enfant Plaza SW, Suite 500
Washington, DC 20024

Page last modified: