About Us

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About Us

Crucial has a long-standing history of working in the aviation industry. Crucial Unlimited was established in 2002 by airline employees and became a full-service MRO with a dedicated courier service called “Crucial Express.” Over the years, Crucial Unlimited has expanded to three bases located in Foristell, MO (STL), Granville, OH (CMH), and Murphysboro, IL (MDH). Upon the request of customers, Crucial has also opened its hangar located in Carbondale, Ilinois. Due to its expansion, Crucial is proud to be able to offer its services nationally and have your parts picked up, repaired, and returned by utilizing our in-house couriers. Crucial can offer services at a much quicker rate and a lower investment compared to most other repair stations. Its creators and managing staff witnessed firsthand the lack of quality, customer service, expeditiousness, and value in support of commercial and corporate airlines. These traits created the mentality in which Crucial was made and what we still strive for today.

Marc Burton


Stacy Burton


Sam Rice

VP of Sales & Business Development

Jeremy Magrum

VP of Maintenance & Engineering

These core values are the heart of Crucial Aviation Companies. They shape our processes, company culture, and commitment to execution.

Our Corporate Family

Here at Crucial, we call ourselves the “TrueCrew.” It’s how we define who we are as a corporate family. We are proud of the skilled men and women we have assembled. The continuing mission of our founders drives our Crew; Crucial delivers results to our customers and partners with true industry-leading quality, speed, reliability, and value. Our strengths are managing bulk support programs, heavy checks, custom A/C conversions, tear-downs, & more. Whether your project is large or small, AOG or otherwise, Crucial has you covered.