proponent |prəˈpōnənt| 
Noun: an advocate; a champion; a supporter.

Proponent is the new name for the combined company formed by Kapco Global, Avio-Diepen and their subsidiaries.  With 115 years of collective experience supporting the MRO, OEM and commercial airline markets, Proponent is the world’s largest independent aerospace distributor. 

For us, proponent is a one-word mission statement. It represents the value we place on relationships and championing our suppliers, our customers, our employees and each other. We know you need a partner to deliver high-quality aircraft parts, global scale & partnerships, and reliable on-time performance  — and these are important parts of our business. But we think you deserve more from your aerospace distributor.  You deserve expertise, you deserve flexibility, you deserve creativity — you deserve a true partner.

We are Proponent, and we work hard to be that partner.

We’re invested in your success – literally!  Proponent is proudly a 100% employee-owned company, with 600 staff operating out of 12 facilities in 8 countries across the globe.  From the warehouse floor to the boardroom, we are working for you.

Aviation & Aerospace

Proponent

Proponent's headquarters in Brea, CA, United States

Andrew Todhunter

Stephen Emmert

Karen K.

Jeff Nixon

Desiree Garcia Gphr

Steven Frields

Customer Relationship Management

Leadership Team

Proponent

Org chart

Teams

Customer Relationship Management

Leadership Team

Offices

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