If you have a need for an exchange, please contact Castleberry Instruments & Avionics who is dedicated to providing customers total service, including exchange of a wide listing of overhaul components. The company maintains a comprehensive history of exchange activities and is competitive within the industry on pricing and availability. Diverse industry resources provides Castleberry Instruments & Avionics a reliable source of “Hard-to-Get” components for customers under pressure to return an aircraft to service.  You can find them at