EASA SIB 2022-11: SAE Type II, III and IV Aircraft Anti-Icing Fluid Application

What to do

Air operators and ground de-icing service providers should ensure all personnel involved in anti-icing operations are trained according to SAE AS6285 application methods. They must apply anti-icing fluids to fully cover surfaces with a uniform coating, visually confirming fluid runoff at wing edges, and conduct application as close to departure as possible. Operations manuals should be reviewed and updated to reflect these practices. There are no mandatory compliance deadlines as this bulletin provides recommendations only.

Summary

EASA Safety Information Bulletin 2022-11 is a guidance document addressing the application of SAE Type II, III, and IV aircraft anti-icing fluids. It applies to air operators and contracted ground de-icing service providers operating aircraft registered in EASA Member States. The bulletin emphasizes proper application techniques to ensure effective anti-icing protection and holdover times, referencing SAE Aerospace Material Specifications and Transport Canada Civil Aviation recommendations.

What changed

This bulletin introduces updated guidance based on Transport Canada Civil Aviation Safety Alert 2022-06 regarding the correct application of thickened anti-icing fluids. It clarifies that fluid quantities listed in SAE AS6286B Table B.2.4 should not be used operationally and stresses the importance of applying fluid until it just begins to run off wing edges. The document also highlights the need for continuous application close to departure time and uniform coverage verification.

Why it matters

Proper application of anti-icing fluids is critical to achieving the expected holdover times that protect aircraft surfaces from ice accumulation before takeoff. Misapplication can reduce fluid effectiveness, potentially compromising safety during ground operations in icing conditions. This guidance helps operators and ground service providers maintain compliance with recognized standards and improve operational safety without imposing mandatory regulatory actions.