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Lockheed C-5M Super Galaxy Modernized Strategic Airlift Variant

The Lockheed C-5M Super Galaxy is the modernized C-5 strategic transport variant produced through the Reliability Enhancement and Re-engining Program. Lockheed Martin and the U.S. Air Force describe its upgraded avionics, maintenance diagnostics, and four CF6-80C2-L1F engines (designated F-138), while its full-width nose and aft doors continue to support outsized intercontinental cargo and personnel transport.

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Identity

Aliases
C-5M Super GalaxyC-5MC-5M GalaxyF-138 C-5M
Family Name
Lockheed C-5M Super Galaxy
Full Name
Lockheed C-5M Super Galaxy Modernized Strategic Airlift Variant
Roles
cargomilitaryutility
Status
active
Type
aircraft
Variant Name
C-5M

Details

Aircraft Specs
Configuration
fixed_wing
Crew Capacity
7
Cruise Speed
…
Max Payload Mass
…
Max Takeoff Mass
…
Operating Modes
land
Range
…
Takeoff Landing Capabilities
conventional
Description
The Lockheed C-5M Super Galaxy is the modernized C-5 strategic transport variant produced through the Reliability Enhancement and Re-engining Program. Lockheed Martin and the U.S. Air Force describe its upgraded avionics, maintenance diagnostics, and four CF6-80C2-L1F engines (designated F-138), while its full-width nose and aft doors continue to support outsized intercontinental cargo and personnel transport.
Dimensions
Height
…
Length
…
Wingspan
…
Manufacturer
Parent Vehicle Family
Propulsion Configurations
  • Entries
    • Count
      4
      Placement
      wing
      Propulsion System
      Role
      main
      Variant Notes
      Exact C-5M installation: four General Electric CF6-80C2-L1F engines, designated F-138 in U.S. Air Force service.
    Name
    C-5M F138 / CF6-80C2-L1F installation
  • Entries
    • Count
      4
      Placement
      wing
      Propulsion System
      Role
      main
      Stage
      airframe
      Variant Notes
      General Electric F138-GE-100; Lockheed C-5M Super Galaxy
    Name
    C-5M F138-GE-100 installation
    Notes
    The U.S. Air Force identifies four F-138-GE100 General Electric engines on the C-5M; F-138 is the military designation for CF6-80C2-L1F.

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Creation Time
August 14, 2026 at 02:18:30 UTC
Updated Time
August 15, 2026 at 10:15:24 UTC