Runway braking action terms must be described using which set of terms?

• A. EXCELLENT, GOOD, FAIR, or POOR
• B. GOOD, GOOD TO MEDIUM, MEDIUM, MEDIUM TO POOR, POOR, OR NIL
• C. GOOD, FAIR, POOR, or BAD
• D. EXCELLENT

Answer: (D)

Braking action on a runway is communicated using a standard scale so pilots and controllers can quickly gauge how well a surface will grip. The commonly used terms are EXCELLENT, GOOD, FAIR, POOR, and NIL, with EXCELLENT representing the best possible braking action. This scale provides a clear, unambiguous ladder of conditions, letting you describe surface performance concisely and consistently. Some other options in a list either omit part of this scale, use nonstandard synonyms, or reduce the set to a single term, which would lessen clarity. So recognizing EXCELLENT as part of the established braking action scale correctly reflects the top end of the standard terminology.