Cargo Door Conversion Hydraulics for Freighter Aircraft

Kawak Aviation specializes in the design, engineering, and manufacturing of hydraulic systems for cargo door conversion programs on commercial aircraft. Our hydraulic power modules and component solutions support a range of critical operations, including door venting, locking, latching, and lifting, tailored to meet the rigorous demands of aircraft conversion projects.

With deep experience in freighter aircraft modifications, Kawak is a trusted partner for OEMs and conversion specialists seeking reliable, high-performance hydraulic systems. Our engineering capabilities include developing custom hydraulic modules, valve systems, and drop-in replacement components, all designed to meet FAA certification standards and withstand demanding aerospace environments—including compatibility with Phosphate-Ester hydraulic fluids used in modern aircraft.

Proven Success Across Aircraft Platforms

Kawak has delivered certified hydraulic system solutions for multiple high-profile cargo conversion programs, including those for Boeing 757 and Airbus A321 aircraft. These projects required:

• Reverse-engineering and improving discontinued or outdated components
• Custom system designs optimized for aircraft-specific layouts
• Engineering and validation under DO-160 testing protocols
• Full FAA certification within accelerated development timelines

Our collaborative approach, from detailed design through production and post-certification support, makes Kawak a preferred hydraulic system partner for aircraft modification leaders.

Expanding Capabilities: Boeing 777 Cargo Door Program

Kawak is currently engaged in a new cargo door hydraulic system development program for the Boeing 777 freighter conversion, supporting a new customer partnership. This program builds on our legacy of successful conversions and further demonstrates our ability to scale solutions for widebody aircraft platforms.

End-to-End Hydraulic Solutions

Whether you’re retrofitting a narrow-body aircraft or modifying a wide-body platform, Kawak delivers fully integrated hydraulic solutions that meet stringent aerospace standards, reduce program risk, and improve system performance.

Need hydraulic systems for your cargo door conversion project?
Contact us to learn how Kawak can support your next freighter conversion program with proven engineering, rapid development, and precision manufacturing.