With respect to the certification of aircraft, which is a category of aircraft?

• A. Normal
• B. Airplane
• C. Glider
• D. Balloon

Answer: (A)

In aircraft certification, two terms are used: category and class. The category identifies the broad type of aircraft—airplane, glider, balloon, rotorcraft, etc. Within the airplane category, there are classes such as Normal, Utility, and Acrobatic that define structural limits and permitted operations. So Normal is not a category by itself; it’s a class within the airplane category. Among the options, the true categories are airplane, glider, and balloon. The idea to remember is that Normal describes an airplane’s design/class, not the overall category.