Cowl anti-ice must be ON for flight operations under which condition(s)?

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Prepare for the GoJet Airlines CRJ-550 Test. Use flashcards, multiple choice questions, and detailed explanations to ace your exam!

Multiple Choice

Cowl anti-ice must be ON for flight operations under which condition(s)?

Explanation:
Engine cowl anti-ice is used to prevent ice from forming on the engine inlet if there’s a real icing threat. On this airplane, that threat is recognized when the Total Air Temperature is at or below 10C and there is visible moisture (like clouds, fog, rain, or drizzle) or icing conditions, or when an ice annunciation is shown. In those cases the cowl anti-ice must be ON to keep the intake clear. If the air is dry and warmer than 10C, there’s no icing risk and anti-ice isn’t required. Simply being very cold (SAT <= -40C) isn’t the trigger by itself, and saying it’s never needed would ignore potential icing scenarios.

Engine cowl anti-ice is used to prevent ice from forming on the engine inlet if there’s a real icing threat. On this airplane, that threat is recognized when the Total Air Temperature is at or below 10C and there is visible moisture (like clouds, fog, rain, or drizzle) or icing conditions, or when an ice annunciation is shown. In those cases the cowl anti-ice must be ON to keep the intake clear. If the air is dry and warmer than 10C, there’s no icing risk and anti-ice isn’t required. Simply being very cold (SAT <= -40C) isn’t the trigger by itself, and saying it’s never needed would ignore potential icing scenarios.

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