Which option is NOT listed among the basic tail configurations?

• A. Canard tail
• B. Conventional tail
• C. Forward slant vertical stabilizer
• D. Twin Boom tail

Answer: (A)

In aircraft design, tail configurations refer to how the tail surfaces are arranged to give stability and control. A canard setup uses a forward lifting surface placed ahead of the wing, not part of the tail arrangement at the rear. Because of that, it isn’t categorized as a basic tail configuration. The other two—conventional tail and twin boom tail—are recognized tail layouts, with the vertical stabilizer either mounted conventionally at the rear or split between two supporting booms. The forward slant vertical stabilizer is a variation of a tail arrangement as well. So the option that isn’t a basic tail configuration is the canard setup.