Introduction
Aircraft Restoration Corporation (ARC) offers several FAA certified STC’s, including:

STC SA00555DE
Main Landing Gear Inner Door Removal Kit, installed on all of the PA-31 series Navajo’s and Cheyenne’s and on the PA-42, Cheyenne III. This simple modification reduces maintenance costs and improves performance by allowing smooth air to flow unrestricted under the wings. View Detailed Brochure.

STC SA1744SO
Installs an additional 22.5 gallons of fuel in each wing locker on the PA31 series Navajo’s when the optional wing lockers are installed. View Detailed Brochure.