20-71 - Dual Locking Devices on Fasteners
- Date Issued
- December 08, 1970
- Responsible Office
- AIR-120, Aviation Safety - Aircraft Certification Service, Aircraft Engineering Division
- 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.
- AC20-71.pdf (PDF, 240 KB)