Multiple choice

The type of icing, which occurs when super cooled water drops strike a part of air intake and induction system, is called

  1. throttle ice

  2. glaze ice

  3. impact ice

  4. rime ice
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Impact ice forms when supercooled water droplets (liquid water below freezing temperature) strike exposed parts of an aircraft, particularly in the air intake and induction system. The droplets freeze instantly upon contact with the aircraft surface, creating a rough ice accumulation that can disrupt airflow and engine performance. This differs from rime ice (formed through rapid freezing of small droplets) and glaze ice (formed when larger droplets spread before freezing).

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