EASA SIB 2010-26R1
Potential Performance Degradation of Anti-icing Fluids — Reduced Holdover Times
Summary
EASA Safety Information Bulletin 2010-26R1 is an informational document addressing potential performance degradation of aircraft anti-icing fluids due to contamination by runway de-icing fluids. It applies to all aeroplanes operating in winter conditions and highlights that mixing thickened anti-icing fluids with small amounts of formate or acetate-based runway de-icing fluids can reduce holdover times. The bulletin does not target specific aircraft or engine models but provides guidance relevant to ground operations involving de-icing and anti-icing procedures.
What Changed
EASA SIB 2010-26R1 revises the original bulletin to recommend a more flexible approach regarding the potential degradation of anti-icing fluid performance. It introduces findings from recent research indicating that a two-step de-icing and anti-icing process can mitigate the reduction in holdover time caused by runway fluid contamination. The revision emphasizes awareness and procedural adjustments rather than mandatory requirements.
Why It Matters
This bulletin is important for aviation professionals because it highlights a potential risk to aircraft anti-icing effectiveness that could impact flight safety during winter operations. Operators and maintenance teams need to understand how runway fluid contamination can reduce holdover times, potentially affecting aircraft protection against ice formation. Awareness and proper procedural adjustments help ensure continued safety and compliance with best practices in ground de-icing and anti-icing.
What To Do
Operators should inform their personnel about the potential degradation effect of mixing anti-icing fluids with runway de-icing residues and consider implementing a two-step de-icing/anti-icing process using water or Type I fluid as the first step. They should develop procedures or guidelines tailored to their operational conditions and network structure. No mandatory compliance deadline is specified, and the recommendations are advisory only.
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