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 91-85A - Authorization of Aircraft and Operators for Flight in Reduced Vertical Separation Minimum (RVSM) Airspace (Cancelled)

Document Information

Number
91-85A
Title
Authorization of Aircraft and Operators for Flight in Reduced Vertical Separation Minimum (RVSM) Airspace
Date cancelled
2019-01-29
Cancellation notes
AC 91-85B
Date issued
2016-07-21
Office of Primary Responsibility
AFS-400
Description

This advisory circular (AC) applies to all Operators conducting Reduced Vertical Separation Minimum (RVSM) operations. The AC can be used to obtain an initial operational authorization, or amend an existing, operational authorization. The AC appendices include supportive information relating to RVSM airworthiness certifications, training programs, operating practices and procedures, RVSM operations in oceanic and remote continental airspace, and review of height-keeping parameters. This AC describes acceptable means, but not the only means, for an Operator to obtain authorization to conduct flight in airspace or on routes where RVSM is applied. The advisory material contained in this AC has been substantially modified since the AC was issued in its original form in 2009.

Content