Anti-Icing and De Icing

  • Created by: stonesy71
  • Created on: 05-11-19 11:07

Consequences of not removing snow and ice from an

aircraft surface:

the build-up of frost, ice or snow on aircraft can increase drag, reduce aerodynamic lift, increase weight and therefore increase minimum stall speed, it can affect sensors, ice down intake, frozen flying controls.

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Aircraft PTs are responsible for ensuring

that the topic 1 contains appropriate procedures for the anti-icing and de-icing of parked aircraft. State the procedures that must be included in the topic 1:

  • Anti-icing measures to be taken, methods and equipment used, procedures for de-icing with explosives fitted, pre-flight inspection checklist. Specific-to-type information, including fluid type to be used, and Holdover times.

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What is meant by the term ‘holdover time’, and

what is it dependent upon?

  • The elapsed time from commencing de-icing/anti-icing on an aircraft to the onset of refreezing is known as the holdover time and is dependent on the prevailing weather conditions and the temperature.

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