Proponent is the world’s largest independent distributor of commercial aircraft parts, serving the MRO, OEM and airline markets. With 500 employees at 11 facilities worldwide, we think and operate on the global scale of aerospace.

Modern aircraft are some of the most complex machines ever engineered, with millions of components from countless suppliers. With over 45 years of experience, we work to simplify your aftermarket needs with fast, reliable delivery of critical parts, and custom solutions to improve overall efficiency.

Proponent isn’t just a name, it’s our mission statement. We are committed to contributing to the success of our customers and suppliers. We work to address your unique business challenges and goals with unmatched agility and industry-leading customer service.

From the boardroom to the warehouse, we delight in taking care of the details that keep planes in the air. See what’s possible with a proponent on your side.