Airmark offers a large inventory of overhauled Hartzell Engine Technologies Wastegates, Controllers and Relief valves, formerly known as Airesearch (Garret). Our aircraft turbocharger accessory overhaul and repair services include fast turnarounds and available exchange units to keep your downtime to a minimum. Each accessory we overhaul or repair is tested by our FAA approved facility to maintain our high quality commitments. Our trained technicians fully comply with all the manufacturer’s requirements to provide you with a product that is trouble free. Our work is accomplished by utilizing the most current Manufacture’s Overhaul Manual. Reliable, Reasonably Priced, Quality Commitment are just some of the reasons aviation professionals prefer Airmark.