Glossary
De-icing fluid residue
A dried gel left after Type II or Type IV anti-icing fluid application. It re-hydrates in humidity, attracts soil, and can accumulate in aerodynamically quiet areas such as flap tracks and control surface gaps.
What it means
A dried gel left after Type II or Type IV anti-icing fluid application. It re-hydrates in humidity, attracts soil, and can accumulate in aerodynamically quiet areas such as flap tracks and control surface gaps.
Why it matters
Residue build-up in control surface cavities is a documented concern. Post-season removal is a maintenance task, not cosmetic.
Where this comes up
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