Skip to page content

USA Banner

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.

United States Department of Transportation United States Department of Transportation

AC 90-106B - Enhanced Flight Vision System Operations

Document Information

Enhanced Flight Vision System Operations
Date issued
Office of Primary Responsibility

This AC provides an explanation of enhanced flight vision system (EFVS) operations conducted under Title 14 of the Code of Federal Regulations (14 CFR), guidance for obtaining Operations Specification (OpSpec), Management Specification (MSpec), or Letter of Authorization (LOA) C048, Enhanced Flight Vision System (EFVS) Operations, and information that may facilitate the development of a training curriculum for EFVS operations.

Number Title Date
90-106A Enhanced Flight Vision Systems - Change 1

This advisory circular (AC) provides information about using an enhanced flight vision system (EFVS) in lieu of natural vision while conducting instrument approach operations. It addresses dispatching and releasing aircraft for EFVS operations and explains the requirements for conducting EFVS operations to 100 feet above the touchdown zone elevation (TDZE) and EFVS operations to touchdown and rollout. This AC also explains how to obtain an operations specification (OpSpec), management specification (MSpec), or letter of authorization (LOA) to conduct those EFVS operations that require an approval.

We have made every attempt to write EFVS regulations that are performance based and not limited to a specific sensor technology. The regulations accommodate future growth in real-time sensor technologies used in most EFVSs and maximize the benefits of rapidly evolving instrument approach procedures (IAP) and advanced flight deck technology to increase safety and access during low-visibility operations.