Interim Report - Introduction - EASA

INTERIM REPORT – OPTIONS FOR CHANGE – ATTACHMENT C
EASA.2009.OP.21
2.4 De/anti-icing communication
Proper communication is as important as proper de/anti-icing. There cannot be any doubt of
the procedure, fluid used, holdover time, areas covered etc. when communicating and
verifying the process.
As important as the communication between the flight crew and the de-icing crew so is the
communication between the de-icing crews themselves and the de-icing coordinator. No
misconception can be allowed when deciding on treatment and verifying operational
procedures.
2.4.1.1 The Anti-Icing Code
The Anti-Icing Code contains the minimum information needed for communication. It is
allowed, and preferred, to give other information, such as areas treated, areas checked,
engines and propellers, frost thickness on underwings etc, if there is a need for it or if the
crew has requested something else.
Note that heavy precipitation rates or high moisture content, high wind velocity or jet blast
may reduce holdover time below the lowest time stated in the range. Holdover time may also
be reduced when aircraft skin temperature is lower than OAT. Therefore, the indicated times
should be used only in conjunction with a pretakeoff check. For use of holdover time
guidelines consult Fluid Manufacturer Technical Literature for minimum viscosity limits of
fluids as applied to aircraft surfaces. A Type II, III or Type IV fluid is considered degraded if
the viscosity is below the minimum limit as provided by the fluid manufacturer.
3 Off-Gate De/Anti-icing Operation
3.1 Airport operations
The operation of any de-icing facility should maximise efficiency where possible.
Local settings may demand one sort of operation for one airport that could be unusable for
another location. As long as “local settings” is not a euphemism for different levels of
investment and capability/capacity of facilities and equipment and personnel etc.
3.4 Management of the centralised de/anti-icing operation.
A management and procedure plan should be available at the airport in relevant publications.
This program shall explain the necessary procedures of the de-icing operation. The remote
de-icing operation must be clearly determined and informed to all stakeholders. A de-icing
program must be established irrespective of whether it is a remote only or a mix operation.
The procedures, the throughput, the options, the checks, the communication etc. must be
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