Saving the Galaxy: The C-5 AMP/RERP Program
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DID’s FOCUS articles offer in-depth, updated looks at significant military programs of record. This FOCUS Article explains what the C-5 AMP/RERP program involves, what it’s so critical to the future of American airpower, and why it’s such a challenging project. It also covers developments on the political and contracting fronts.
When it was introduced, back in 1970, the C-5 Galaxy was the largest plane in the world. Even so, the fleet is not without its issues. The C-5 has the highest operating cost of any Air Force weapon system, and those costs stem from extremely high maintenance demands as well as poor fuel economy. Availability rates routinely hover near 50%. To add insult to injury, the Russians not only built a bigger plane (the AN-124), they sold it off at the end of the Cold War to semi-private operators, turning it into a commercial success whose customer list now includes… NATO.
Meanwhile, the USA still needs long-range, heavy load airlift. The AN-124’s commercial success may get its production line restarted, but the C-5 has no such hope. C-17s cost more than $200 million per plane – about the cost of a 747-8 freighter, but still a lot of money. The US Air Force believed it could save money by upgrading the older C-5s to renew their avionics (AMP) and engines (RERP). Their hope was that this would eliminate the problems that keep so many C-5s in the hangar, cut down on future maintenance costs, and grow airlift capacity without adding new planes. Unfortunately, the program is program experienced major cost growth, and a battle between C-5M and C-17 supporters in Congress is underway.
The C-5M program wound up being cut in size, and cut in two. The C-5A and C-5B/C fleets are now slated for different treatment, which will deliver fewer of the hoped-for benefits in exchange for lower costs and lower risk. The latest developments involve the 50th AMP delivery, ongoing contracts for AMP kit installation, and some work with the Marines’ new helicopters…
- The C-5’s AMP/RERP Changes
- The AMP/RERP Program and the C-5 Gamble
- Contracts & Key Events, 1999 – Present [updated]
- Additional Readings & Sources





