The results indicate that the structure of frontal anti icer affects anti icing effectiveness obviously for a hot air anti icing system, the double skin chord direction anti icer I.

飞机发动机防冰对飞行安全具有十分重要的意义，对于热气防冰系统，前缘防冰器的结构型式对防冰的效果影响很大。

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One pilot told NTSB investigators his wing anti-icing system "couldn't keep up" with ice accumulation of as much as 4 inches that had developed over a span of five minutes.

WSJ: NTSB: Pilot action, icing led to NJ plane crash