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The pitot heater is fitted to prevent

  • A.Overheating of the pressure transducer
  • B.Condensation in the static line only
  • C.Corrosion of the probe
  • D.Ice blocking the ram inlet and drain

Answer: D

Ice accretion at the inlet is the classic cause of a trapped-pressure airspeed failure. Because the failure develops silently and mimics a genuine speed change, heater use is a checklist item before entering visible moisture.

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