About The Prebuy Guys


"Once you've tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, and there you will always long to return" -Leonardo da Vinci


What We do

Aircraft prebuy inspections made easy. We are The Prebuy Guys, an independent aircraft pre-purchase inspection and prebuy service. We've been representing aircraft buyers and owners for over 50 years by delivering independent and comprehensive aircraft pre-purchase inspection services and aircraft ownership consulting. We are experienced on every make and model aircraft and have the experience, expertise and resources to make the buying process simple, straight forward and stress-free. We've helped thousands of owners over the years make smarter, more effective buying decisions, and we can help you too.


Aircraft ownership made easy. Aside from helping prospective aircraft buyers with their prebuy inspection needs, we also assist in researching, finding and selecting candidate aircraft to buy. Once you buy the aircraft, we continue to provide you with support through a variety of aircraft ownership, maintenance, operations and management coaching services. Click the button below to learn more. 


Our Mission

To help you save money, reduce risk, and increase safety with your personal or corporate aircraft. 

Our ethos

To have a passionate and disciplined commitment to excellence.

Our Vision

Our vision is to enhance aviation through responsible and effective aircraft ownership; become the most trusted resource for aircraft ownership, maintenance and operations.


Who we are

Don Sebastian is a pilot, flight instructor, aircraft mechanic and aviation expert with over 50 years' experience helping aircraft buyers and owners. Don is rated in airplanes, helicopters, and gliders and is type-rated in several jet aircraft including the Cessna Citation corporate jet. Learn more about Don here.

Adam Sipe is an aircraft mechanic, pilot and aviation management expert with over 10 years' experience maintaining and managing aircraft. Adam served as a crew chief, mechanic and quality assurance inspector on the F/A-18 Hornet fighter jets while serving in the Marine Corps. Learn more about Adam here.