Precision Airparts Support Services, Inc. | 577 followers on LinkedIn. Precision Airparts Support Services, Inc. is a Collins Aerospace and Triumph Group Licensed Repair Center with over 35 years of experience. PASS specializes in aircraft component manufacture and MRO for a wide range of pneumatic, hydraulic, electro-mechanical, and avionics systems on both Military and Commercial platforms. Our FAA/EASA Part 145 Certificate covers Accessory I, II, & III, and Instrument I, II, & IV.