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Understanding Runway Conditions in Adverse Weather for Domestic Flights

June 22, 2026 · The Clime Team
Understanding Runway Conditions in Adverse Weather for Domestic Flights

Adverse weather conditions significantly impact runway surfaces, affecting aircraft performance during takeoff and landing. Understanding these conditions is crucial for flight safety.

What Are Runway Condition Codes (RwyCC)?

The Federal Aviation Administration (FAA) employs a system called the Runway Condition Assessment Matrix (RCAM) to evaluate runway surfaces. This system assigns a Runway Condition Code (RwyCC) ranging from 0 to 6, where:

  • 6: Dry
  • 5: Wet, frost, or slush less than 1/8 inch deep
  • 4: Slippery when wet or compacted snow at temperatures below -15°C
  • 3: Wet snow or slush 1/8 inch or deeper, or dry snow more than 1/8 inch
  • 2: Standing water or slush in measurable amounts, or compacted snow at warmer temperatures
  • 1: Ice
  • 0: Wet ice

These codes are assessed for each third of the runway: touchdown, midpoint, and rollout. For example, a report of 5/4/3 indicates that the touchdown zone is wet, the midpoint is slippery when wet or has compacted snow, and the rollout zone has wet snow or slush. (practicetestgeeks.com)

How Are Runway Conditions Reported?

Airport operators conduct assessments of runway conditions, especially during adverse weather. These evaluations result in Field Condition (FICON) reports, which include:

  • Runway(s) in use
  • Time of the assessment
  • Runway condition codes for each zone
  • Pilot-reported braking action reports (if available)
  • The contaminant type (e.g., wet snow, dry snow, slush, ice)

These reports are disseminated to pilots through Notices to Airmen (NOTAMs) and Automatic Terminal Information Service (ATIS) broadcasts. (faa.gov)

How Do Adverse Weather Conditions Affect Runway Surfaces?

Adverse weather can lead to various contaminants on runway surfaces, including:

  • Rain: Can create standing water, leading to hydroplaning risks.
  • Snow and Ice: Can cause slippery conditions, reducing braking efficiency.
  • Fog: Reduces visibility, making it challenging to assess runway conditions visually.

These conditions necessitate accurate and timely reporting to ensure pilot awareness and safety.

How Does Planes Live Assist Pilots?

Planes Live offers real-time weather updates, including runway condition reports, to pilots. By integrating data from various sources, Planes Live provides comprehensive information on runway conditions, helping pilots make informed decisions during adverse weather.

Conclusion

Understanding runway conditions during adverse weather is vital for flight safety. Utilizing tools like Planes Live can enhance situational awareness and assist pilots in navigating challenging conditions effectively.

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Frequently Asked Questions