Falcon True Color
Falcon True Color (FTC) is a raster image format associated with Atari Falcon computers.
It is apparently a raw bitmap format with 16 bits/pixel in RGB 5-6-5 format. (On most platforms, this would be called high color, not true color.) Images are 384×240 pixels, and files are 184320 bytes in size.
See also XGA (Falcon).