Lockheed Martin delivered the 52nd C-5M Super Galaxy strategic transport modernized under the U.S. Air Force’s Reliability Enhancement and Re-engining Program (RERP).

The delivery completes the RERP upgrade, which extends the service life of the C-5 fleet out until the 2040s.

Lockheed Martin began RERP development work in 2001. RERP incorporates more than 70 improvements that improve reliability, efficiency, maintainability and availability. RERP included changes or modifications to the airframe structure; environmental and pneumatic systems; hydraulic systems, electrical system; fuel system; landing gear; and flight controls.

“With the capability inherent in the C-5M, the Super Galaxy is more efficient and more reliable, and better able to do its job of truly global strategic airlift,” said Patricia Pagan, Lockheed Martin Air Mobility and Maritime Missions Strategic Airlift director.

The heart of the system is the GE F138 turbofan engine which provides 22 percent more thrust and allows the C-5M to meet the FAA’s Stage 4 noise reduction requirements.

The C-5M holds 89 FAI-certified world aviation records, the most by any aircraft type. These records include time-to-climb with payload, altitude with payload, and greatest payload carried.

The C-5 Galaxy has been operated solely by the U.S. Air Force since 1970 and is the largest strategic airlifter in the U.S. Air Force’s fleet. The C-5 is capable of carrying two 78-ton main battle tanks or helicopters and other large equipment intercontinental distances.