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Which risk increases when an aircraft's flight-spoiler doors activate asymmetrically?

A)Increased parasite drag formation
B)Reduced fuel efficiency ratio
C)An uncontrolled rolling rotation
D)Elevated cabin pressure differential

💡 Explanation

Flight-spoiler asymmetry causes differential lift force, triggering **adverse yaw,** because unequal drag induces a rolling moment. Therefore, the risk is uncontrolled roll, rather than solely increased drag or loss of efficiency which could occur symmetrically under controlled deployments.

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