Advanced Composite Cargo Aircraft (ACCA)


Aerospace & Defense

Information Technology


Emerging Capabilities

Advanced Composite Cargo Aircraft (ACCA)


The United States Air Force Research Laboratory selected the Lockheed Martin Skunk Works® to build an X-Plane with new materials and structural concepts that could forever change the way we envision and fly aircraft.

Under the Advanced Composite Cargo Aircraft (ACCA) program, we designed, developed and manufactured a technology demonstration aircraft that featured advanced structural concepts and manufacturing techniques integrated with an advanced aerodynamic design. The purpose was to demonstrate the application of structural design and manufacturing technologies to significantly reduce the structural weight and cost of future military transport type aircraft. Phase I, II and III were completed and with 15 successful flights of ACCA in 2009-2010.

The use of composites in aircraft manufacturing will mean lighter, less expensive and more durable aircraft that also are easier to maintain. For example, the manufacturing process will require far fewer parts and will dramatically reduce corrosion and metal fatigue issues.

ACCA was the first of several steps intended to advance the readiness of multiple technologies needed for the next generation of theater airlift aircraft.

Truly Revolutionary

The ACCA is made of advanced composites, making it lighter and more durable.

At It Again

Skunk Works® is once again reinventing the way we fly with the ACCA.

Reduced Costs

ACCA is proving that composite technologies are drastically reducing design and manufacturing costs.

Game Changing

Once proven, the ACCA has the potential to change aircraft manufacturing for the better.

Fewer Parts

The ACCA manufacturing process requires fewer parts.

First Flight

The ACCA flew for the first time on June 2, 2009.

Truly Revolutionary

The ACCA is made of advanced composites, making it lighter and more durable.