Which areas of the Space Shuttle Orbiter were protected by the Carbon-Carbon (CC) composite?

Answer

The wing leading edges and the nose cap

The wing leading edges and the nose cap were the absolute hottest zones, facing temperatures exceeding $1,650^ ext{ extdegree} ext{C}$, necessitating the use of the strong Carbon-Carbon composite.

Which areas of the Space Shuttle Orbiter were protected by the Carbon-Carbon (CC) composite?
AerospaceMaterialspacecraftreentryheat shield