C5 - Lockheed C-5 Galaxy

:small_airplane: Aircraft Model (Name & Manufacturer)
Lockheed C-5 Galaxy

:globe_showing_europe_africa: Aircraft Category
F

:compass: Purpose or Role in Game
Heavyweight Military transport aircraft

:chart_increasing: Why should this aircraft be added?
The C-5 would serve as a good counterpart to the An-124 that is already present in the game. It would give players another option besides the B748F for an F sized cargo aircraft, fit in well with the C-130 and C-17.

:airplane: Airlines that use it
US Air Force

:magnifying_glass_tilted_left: Special characteristics or variants
MTOW of the C-5M is 381,024kg, including 127,460kg of cargo; more than the An-124 in game (120,000kg) but less than the B748F in game (132,600kg) assuming cargo is 1:1 for kg
Capable of β€œkneeling",” or lowering the nose down to facilitate easier cargo loading, similar to An-124

C-5A - Initial variant from 1969, restricted 80% cargo loads due to fatigue cracks in early service, remedied by 1985
C-5B - General improvement, from 1982, including all upgrades to the C-5A over the years
C-5C - Two aircraft rebuilt after major accidents to accommodate large cargo, mostly satellites
C-5M - Major upgrade and rebuild, complying with modern standards, changing the TF39 engines found on all older aircraft with F138 (GE CF6) engines, improving cargo load and range, other improvements
L-500 - Cancelled civil version of the C-5

:camera_with_flash: Optional: Links or references
Lockheed C-5 - Wikipedia