Aircraft · Air
C-5M Super Galaxy
Modernized C-5 strategic transport for cargo and personnel.
- Milestones0
- Operators—
- Components—
- Programs—
- Capabilities—
- Inputs—

Photo: U.S. Air Force photo by Tech. Sgt. Justin Norton · Public domain (PD-USGov-Military-Air Force) · Resized and reencoded as WebP; no additional crop. The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement.
Timeline
No milestones recorded for C-5M Super Galaxy yet. The timeline fills in as unveilings, tests, contracts and deliveries are sourced.
Cost to the Government
Aircraft · Lockheed Martin
C-5M Super Galaxy
Strategic heavy airlift modernized from existing C-5 airframes through separate avionics and re-engining programs.
RERP procurement / modification
$112.906M
2013-12 · Then-year USD
Derived $5.5324B procurement / 49 production modifications. Excludes original airframe and separate avionics modernization.
Department of Defense ↗Modernization fleet scope
52
2018 fact sheet · U.S. only
Air Force fleet designated for C-5M conversion; not a mission-capable count.
U.S. Air Force ↗RERP acquisition quantity
52
2013-12 · U.S. only
Three development plus 49 production modifications.
Department of Defense ↗RERP development total
$1.601B
2013-12 · Then-year USD
Development for re-engining and reliability improvements only.
Department of Defense ↗Modernization and fleet operating costs
GAO’s early C-5 cost history includes legacy variants as well as modernized aircraft. Do not interpret the full decline as savings caused solely by RERP.
Operations & sustainment
Annual O&S / C-5 family aircraft
$21.34M / yr
FY2018 · Constant FY2018 USD
GAO historical operating and support costs; fleet average, not a current-year estimate.
GAO ↗Cost over time · 3 observations
Each row retains its original scope and dollar basis. Changing quantities, service life and inflation can change the estimate without changing the price of building one unit.
| Observation | Measure | Amount | Dollar basis | Evidence |
|---|---|---|---|---|
| FY2011 | Annual O&S / C-5 family aircraft Same GAO inflation-adjusted series. Changes can reflect fleet size and maintenance cycles. | $32.52M / yr | Constant FY2018 USD | GAO ↗ |
| FY2018 | Annual O&S / C-5 family aircraft GAO historical operating and support costs; fleet average, not a current-year estimate. | $21.34M / yr | Constant FY2018 USD | GAO ↗ |
| 2013-12 | RERP program acquisition total Development, procurement and military construction for 52 modifications. | $7.139B | Then-year USD | Department of Defense ↗ |
Contracts & purchasing · 1 records
Award values, ceilings and purchase agreements have different meanings. These records are not added together as total spending.
2009-02-06 · Lot 3 modified contract target, December 2013
U.S. Air Force → Lockheed Martin
$468.3M · 5 units in scope
FA8625-07-C-6471/3; includes installation, spares and support. Not a bare-engine or new-airframe price.
Department of Defense ↗
International buyers
No international purchase documented in this review.
Coverage & open research
- Quantity and cost figures retain their source dates. Historical snapshots are not a census of operational availability on the review date.
- No international purchase record verified in this profile; this is not proof that no foreign operators exist.
Unit costs and contract unit prices for this system, and budget figures for the programs that buy it. Each figure states its dollar basis and links its source; contract values are under Programs & awards.
