The XC-01 is a prototype aircraft seen in Ace Combat X: Skies of Deception. It appears in Joint Operation (before destroying Nevera Jammer) and Break In, before destroying the factories and stopping the A.L.C. They takes place over Monte Breeze.
The XC-01 is a transport aircraft used to deliver the M.B.S.R. to the former Aurelian Capital of Griswall. The M.S.B.R. is intended for to enhance the Meson cannon powered by the Gaiuss tower in the middle of the city. The XC-01's carrying the M.S.B.R.'s for Griswall were all shot down by Gryphus squadron over Monte Breeze. For defense, these XC-01's were armed with their own versions of the M.B.S.R. system and were escorted by fighters such as MiG-31 Foxhounds, Mirage 2000Ds, MiG-29A Fulcrums, and FB-22s.
Most of the other statistics and flight characteristics for the XC-01 are unknown, since it is an un-playable aircraft and only appears in one mission. However, the size and weight of its cargo undoubtedly makes it slow and an easy target. The XC-01 is very similar to the C-X, which is still being tested by Japan.
Ace Combat X (the game itself)
The Aviation Zone: Kawasaki C-X