New Lifetime Lubricated Landing Gear Door Hinge Bushings
Marsh Brothers Aviation (MBA) announces its STC-approved grease-free solution for Beech Bonanza/Baron aircraft main landing gear door bushings. Inspired by Ron Roberts' article in the July 2011 ABS Magazine, MBA's STC is a lasting and simple solution to corrosion between the steel bush and steel sleeve with no need for external lubrication. AeroTough GF is available through Aircraft Spruce and Select Airparts. and is STC approved (SA13-39,SA13-40) with Transport Canada and FAA. Price for a kit including all parts to convert four doors is approximately $300. The Beech Debonair is not approved but may be added in future.
MBA, part of a 103-year-old Canadian family business, has been rebuilding propeller governors and supplying bushings and seals to the warbird market for many years. AeroTough GF is a polymer designed exclusively for aircraft applications. Lubrication is built-in and while typical aviation lubricants have no adverse effect on it, it is designed to run dry. In the door application it runs against a stainless steel bush which cannot rust. The kit includes all necessary hardware for installation.