Most people experience these phenomena with a car. You want to overhaul your car and its engine, you buy an aftermarket part and it just doesn’t fit right. You bought the right part but it doesn’t quite fit like the manufacturer’s OEM part. This is called fit and finish. Third-party part makers are only guessing at the vehicle’s dimensions, so the part they make may not work quite right. Even being off by a small margin can affect the performance of the vehicle. Continue reading What Are Aircraft Engine OEM Approvals & Why Is This Important In An Overhaul?