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.

Site Notification

Site Notification

United States Department of TransportationUnited States Department of Transportation

AC 91-43 - Unreliable Airspeed Indications (Cancelled)

Document Information

Number
91-43
Title
Unreliable Airspeed Indications
Date cancelled
2013-06-17
Cancellation notes
Cancel by AFS-1 (Memo Attached)
Date issued
1975-06-26
Office of Primary Responsibility
AFS-223
Description

Alerts pilots to the possibility of erroneous airspeed/Mach indications that may be caused by blocking or freezing of the pilot system and advises of corrective action that can be taken.

Content