Custom Aircraft Modification & Engineering

Every aircraft operator has different needs, so an airplane that works for a competitor may not work for your company. Aerospace Resources, Inc offers aircraft engineering services to clients all over the world. We specialize in custom modifications that allow you to do more with your existing fleet.

Plane Diagram of a Cargo System

STC Approvals

Without STC approval, your modification won't get off the ground. We have developed numerous STC approvals for ourselves and other companies. We have also produced STC approvals under contractual risk-sharing agreements with our clients. Our engineers have integrated new and existing parts into countless aircraft from all the top manufacturers, including:

• Cessna™
• Beechcraft™
• Bombardier™
• Sikorsky™
• Agusta™
• Airbus™
• Boeing™

Bringing Your Design to Life

From design to FAA approval, we handle your project at every stage. Our talented drafting personnel use 3D CADD to bring your ideas to life and optimize your design. We support your maintenance department with FAA Form 8110.3 for major alterations. We also help develop an entire STC, from the certification plan to the final compliance inspection. With help from our team, your design will be completed and approved on time and on budget.


Rod Ahlsten, Director of Engineering

Rod Ahlsten is our director of engineering. He is an FAA designated engineering representative (DER) for:

• FAR 23, 25, 27 & 29 Structural (Interior Items)
• FAR 23, 25, 27 & 29 Electrical Systems
• Major Alteration & Interior Compliance Approvals

FAA Consultant DER Directory


Past Projects

Our firm has developed STC approvals for clients. Our engineers have worked on:

• Airbus™ A320 Airplanes
• Agusta™ A109 & A119 Helicopters
• Bell™ 407 Helicopters
• Bell™ 212/412 Helicopters
• Beech™ Barron 58 Airplanes
• Beech™ King Air™ 90, 100, 200 & 300 Series Airplanes
• Boeing™ 737BBJ Airplanes
• Boeing™ 747 Airplanes
• Cessna™ 400 & 500 Series Airplanes
• Challenger™ 600 Series Airplanes
• Gulfstream™ I & V Airplanes
• Hawker™ 400 Series
• Jetstream™ 32 Airplanes
• Learjet™ 25, 31, 35, 36, 45, 55 & 60 Series
• Piper™ PA-31 Airplanes
• Sikorsky™ S-92 Helicopters
• Westwind™ 1124 Series