Break the Ice

Ice needs to be avoided at all costs, by both VFR and IFR pilots.

As most general aviation aircraft do not posses the right equipment to aid in proper de-icing tactics, GA pilots are not allowed to fly into known icing conditions.

Yes, we do have the ability to apply carb heat, but carburetor heat is an anti-icing mechanism, or preventative measure, NOT an actual de-icing, or removal, component.

So what’s the deal with ice?

Firstly, it is wise to note that though temperatures can reach freezing, ice will not form unless there is visible moisture in the air. Couple the freezing temperatures with clouds and rain, and then you’ve got trouble.

Here are some things to note regarding ice-building situations:

  • Freezing levels are NOT a contiguous layer. Freezing levels can be higher or lower at any given altitude, and they can drop down lower than forecast.

  • Weather is ever-changing and dynamic. The best way to avoid icing conditions is to play it safe in regards to all types of weather pushing through the area.

  • A general rule of thumb suggests pilots stay a minimum of 1,000 feet, if not 1,500 feet, below any known icing levels, particularly if there’s rain present.

  • Aircraft can still build ice in near-freezing temperatures, as super-cooled droplets can freeze on contact with aircraft surfaces that are below freezing.

SunWest Chief Flight Instructor Scott Settle recommends partaking in a thorough weather briefing prior to takeoff. The best way to do this is by calling 1-800-WX-BRIEF, though it is also possible to use weather briefing services within the Foreflight and Garmin Pilot applications. Despite these applications’ abilities, Scott urges pilots to call for a thorough weather brief.