Higher Planes is an aircraft landing gear and accessory shop and FAA-PMA manufacturer; hydraulic and landing gear components for Twin Commander and Westwind. PMA parts support for 20/30/50 series Learjets. One year product warranty. For technical support contact Barry Cain at [email protected], [email protected] or (936) 494-1717. Hours: 8 a.m. to 5 p.m. CST.