
STCs
Your STC Provider for Aircraft Upgrades and Modifications
As the aviation industry continues to grow and push forward, you may desire to upgrade or modify your existing aircraft. 3S Engineering and 3S Certification is a Supplemental Type Certificate (STC) provider. We own and maintain several STCs and also offer a “turnkey” solution that ensures the fastest path to completion and certification.
STCs Available for Purchase
Our STCs available for purchase range from Wi-Fi activation installations to avionics cockpit retrofits. If you do not see your installation, modification or aircraft manufacturer, please contact us for more information.
Experts in Aircraft Modification and Certification Requirements