Which term is NOT listed as a type of runway?

• A. Instrument
• B. Non-instrument
• C. Non-precision
• D. Precision

Answer: (A)

Runway classification is about the type of approach guidance available for landing. Precision runways provide both vertical and horizontal guidance (like an ILS), non-precision runways offer horizontal guidance only, and non-instrument runways imply no instrument approaches are available (you land visually). The term that isn’t a standalone runway category describes instrument approaches in general, not a particular runway type by itself. Instrument approaches exist on fields that are either precision or non-precision; saying a runway is simply “instrument” doesn’t specify the approach capability the runway itself is categorized by. That’s why instrument isn’t listed as a type of runway, while non-instrument, non-precision, and precision are.