A Pilot's Guide to Ground Icing
Module II - Cues
How to tell when you should worry
Section: Module Summary
Start This SectionModule Summary Cues
In summary, anticipate ground icing conditions anytime there is precipitation or high humidity, and the temperature is expected to fall near or below freezing. Use all the resources available to you – internet, flight service briefer, airport personnel or local news – to be able to determine these ground icing factors.
Expect frost anytime there is a clear, calm night with temperatures falling to the freezing mark.
Module Summary Cues
If ground icing conditions are forecast during your ground stay, arrange to protect your aircraft to spare the de-icing expense.
If you have a quick turn-around scheduled or refuel with cold fuel, anticipate cold-soak effects. Plan for an anti-icing application and account for the abbreviated holdover time.
If active ground icing conditions are forecast or present during your scheduled departure time, determine whether or not you can de/anti-ice and go, or delay the flight until conditions improve.
Specifically, if freezing precipitation, heavy snow, or ice pellets are forecast or present, make alternate arrangements for a delayed departure. Alert your passengers and parties at the destination. Remind them that it is better to arrive late than the potential alternative.
