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 20-71 - Dual Locking Devices on Fasteners

Document Information

Number
20-71
Title
Dual Locking Devices on Fasteners
Status
Active
Date issued
1970-12-08
Office of Primary Responsibility
AIR-120, Aviation Safety - Aircraft Certification Service, Aircraft Engineering Division
Description
Provides guidance and acceptable means, not the sole means, by which compliance may be shown with the requirements for dual locking devices on removable fasteners installed in rotorcraft and transport category airplanes.
Content