Compair Engine Fuel Control Trimmer Kits use basic electronics and wiring, resulting in an inexpensive and more reliable product with lower cost maintenance. In addition, the direct drive head design, used to trim JT9D engines, involves a simple motor-gear design with wiring harness. All engine fuel control trimmer kits use the trim wiring built into the aircraft and do not need bulky cables from the cockpit to the engine. This speeds up installation time and allows the aircraft to taxi with trimmers installed.

Compair makes engine fuel control trimmer kits for:

JT3D, JT8D, JT9D, JT12, CF6, and CFM56 engines.