F-CANS refers to which weather products?

• A. Sigmets & Airmets
• B. NOTAMs
• C. Aerodrome Forecast
• D. Current routine WX report

Answer: (A)

Adversaries in aviation weather are the warning products that alert you to hazards that can affect flight safety. F-CANS points to weather advisories, and the advisories in question are SIGMETs and AIRMETs. SIGMETs warn of significant hazards like severe thunderstorms, severe turbulence, severe icing, or volcanic ash that could affect any aircraft along a route. AIRMETs cover less intense but still impactful conditions, such as moderate icing, moderate turbulence, or ceilings and visibility restrictions, and are especially relevant for smaller aircraft or longer legs. These advisories are distinct from NOTAMs, which are notices about operational conditions; and from Aerodrome Forecasts or current routine weather reports, which are forecasts and observations rather than hazard advisories. So, F-CANS refers to the SIGMETs and AIRMETs that communicate these significant weather hazards.