Alpha Aviation is a family owned and operated FBO, founded in 1990. We like to think that we are a big player in a small market. We produced our first aircraft jacks in 1991 for use in our maintenance shop. We have been selling our jacks since 1995. Most models have been available for many years, with over 6,000 units in service in the United States and several countries around the world. Products by Alpha Aviation Inc.: -Hydraulic Aircraft Jacks - 3 Ton and 8 Ton Models -3 Point Diagonal Shoulder Harness Restraint System STC kits for Beechcraft, Cessna, Ercoupe and Pipers -3 Point Diagonal Shoulder Harness Restraint System Replacements & Minor Change Installations for many models -Ercoupe 3 Point Diagonal Shoulder Harness STC -Ercoupe LSA Gross Weight Increase STC -Ercoupe Battery Master Relay Installation STC -Ercoupe E-Elevator Installation STC Alpha Aviation has a record of continuing product improvement and excellent customer service. If you have any questions, please do not hesitate to contact us.