TAIWIN: The Next-Gen Aviation Weather Frontier

FAA project seeks to tackle challenges of airport terminal icing to enhance flight safety.

Scott Dennstaedt, Ph.D

Friday, April 17, 2026 at 08:00 AM ET

Verified

Edited By:

Travis Tingle

TAIWIN is a tool specifically for icing conditions in the terminal area. [Credit: Glenn Watson]

Key Takeaways:

TAIWIN (Terminal Area Icing Weather Information for NextGen) is an FAA initiative developing a high-resolution diagnostic and forecast tool for aircraft icing specifically in the terminal area.
It aims to provide precise, localized information on various icing types (freezing rain, freezing drizzle, small-drop icing) within a 30 nm radius of an airport to mitigate the rapid and serious hazards of terminal area icing.
TAIWIN's development is driven by extensive research and data, helping to distinguish icing conditions relevant to aircraft certification (e.g., Appendix C vs. O) and fill a critical gap in current weather forecasting tools.
Currently a research tool undergoing evaluation, TAIWIN is projected for eventual operational deployment to significantly enhance pilot safety and decision-making during critical phases of flight.

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Airframe icing is insidious. For general aviation pilots, that means it proceeds in a gradual, subtle way, but with harmful effects.

Therefore, icing remains one of the most serious hazards for small and medium-sized aircraft—often invisible, sometimes unexpected, and always demanding proactive risk management even when the aircraft is equipped with a certified ice protection system. In the terminal environment—takeoff, climbout, approach, and landing—icing can escalate from nuisance to emergency in a matter of minutes due to its transitory nature.