What RwyCC value defines a COMPACTED SNOW on runway and is described as having GOOD to MEDIUM braking action?

• A. RCC 1
• B. RCC 3
• C. RCC 5
• D. RCC 4

Answer: (D)

Braking action on a runway is summarized by the Runway Condition Code (RwyCC), which translates the surface condition into an expected level of friction for braking. Compacted snow sits between very icy/clear surfaces and lighter snow; it provides more grip than loose snow but less than clean pavement. On the Runway Condition Code scale, this specific state is assigned to the fourth level, which is described as good to medium braking action. That means you can expect braking to be usable but not as strong as on dry or damp pavement, so stopping distances will be longer than normal and pilots adjust speed and braking accordingly. Higher codes indicate cleaner or drier surfaces with better braking, while lower codes reflect worse conditions (deeper snow, ice, or slush) with poorer braking.