Interim Report - Introduction - EASA

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INTERIM REPORT – OPTIONS FOR CHANGE EASA.2009.OP.21 3 Summary of existing recommendations and options 3.1 Summary of relevant recommendations made by UK AAIB and German BFU (presented in A-NPA 2007-11) 1. Type I Fluid Availability a. Operators of aircraft with non-powered flight controls are strongly encouraged to use Type I de-icing / anti-icing fluids, in preference to ‘thickened’ fluids, for deicing. b. Type I de-icing fluids are made available on airports regularly used by aircraft with non-powered flying controls and not just Types II/IV. c. De-icing / anti-icing service providers apply Type I and not only Types II/IV on airports regularly used by aircraft with non-powered flying controls. 2. Fluid Residue Management a. Operators of aircraft with non-powered flying controls that are vulnerable to the effects of freezing of re-hydrated de-icing fluid residues, establish engineering procedures for the inspection and removal of such residues from critical control surfaces. b. Where the use of ‘thickened’ de-icing / anti-icing fluids is unavoidable, operators of aircraft with non-powered flight controls, invoke controlled maintenance procedures for the frequent inspection for accumulations of fluid residues and their removal. c. Manufacturers of non-powered flying controlled aircraft develop reliable procedures for their aircraft types to ensure the identification and removal of rehydrated de-icing fluid residues. 3. Approved Organisations and Personnel a. Consideration be given to establishing regulations such that de-icing / anti-icing training and operations are accomplished by certified and approved companies under the supervision of authorities. 4. Fluid Certification a. Fluid manufacturers be encouraged to develop fluids, with suitable ‘holdover’ times, that incorporate gelling agents that are not re-hydratable (sic). b. Certification requirements and criteria be established with respect to all aircraft de-icing / anti-icing fluids, including mandatory limits or evidence of unrestricted suitability of fluids for aircraft with non-powered flying controls. airsight GmbH 5
INTERIM REPORT – OPTIONS FOR CHANGE EASA.2009.OP.21 c. The expected drying and re-hydration properties of thickened de-icing fluids be described and defined by standardisation in such detail as to eliminate significant quality variations among the products of different manufacturers. Current Status of these Recommendations Addressed so far: 1a – EASA SIN 2008-29 2a, 2b – EASA SIN 2008-29 and NPA 2009-09 2c – EASA letter to aircraft manufacturers PBL/ein/C(1.1)2009(D)61465 dated 14 April 2009 For long-term consideration: 4a, 4b, & 4c. For consideration within this Study (see below): 1b, 1c, & 3a. airsight GmbH 6
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Interim Report - Introduction - EASA

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