De-icing.
De-icing is the removal of ice, snow and frost from an aircraft on the ground before take-off, usually by spraying heated fluid, so that no contamination remains on critical surfaces such as wings and tail. Anti-icing, often applied afterwards with a thickened fluid, delays new accumulation for a limited holdover time. De-icing is mandatory whenever contamination is present.
| Term | De-icing |
|---|---|
| Used in | Private aviation, charter brokerage and operations |
| Related terms | Handling agent, FBO (fixed-base operator), Charter agreement |
| Sources | 2 listed below |
What does De-icing mean in practice?
De-icing is the winter cost and delay that first-time travellers rarely budget for.
Regulations do not allow a jet to take off with frost, ice or snow adhering to its wings or tail, because even a thin layer changes the airflow. Type I fluids are thin, heated, and remove contamination but protect only briefly, with holdover times from about 1 to 22 minutes depending on conditions. Type II and IV fluids are thickened, stay on the surfaces until the take-off run, and give holdover times up to about 160 minutes for Type IV. If the holdover time expires before departure, the aircraft must be treated again. Two consequences for you. First, cost: de-icing is charged by volume of fluid and passed through, and on a large jet in heavy snow it can add a significant sum to the trip. Second, delay: at busy airports aircraft queue for de-icing rigs. Hangaring the aircraft overnight reduces both.
Questions
What does De-icing mean?
De-icing is the removal of ice, snow and frost from an aircraft on the ground before take-off, usually by spraying heated fluid, so that no contamination remains on critical surfaces such as wings and tail. Anti-icing, often applied afterwards with a thickened fluid, delays new accumulation for a limited holdover time. De-icing is mandatory whenever contamination is present.
Sources
- Wikipedia: Deicing fluid (accessed 2026-09-20)
- Wikipedia: Aircraft ground handling (accessed 2026-09-20)
Last reviewed 20 September 2026 by Empty Leg Exclusive Editorial Team.