Which engines provide hot bleed air to the wing anti-ice system on the Boeing 737?

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Multiple Choice

Which engines provide hot bleed air to the wing anti-ice system on the Boeing 737?

Explanation:
Wing anti-ice on the 737 relies on hot bleed air to warm the wing’s leading edges. That heated air comes from the engine bleed air systems, and the design uses both engines as sources. This redundancy means the anti-ice system can draw from either engine and, if needed, from both, ensuring ongoing anti-ice capability even if one engine isn’t delivering bleed air. In icing conditions, having both engines as sources provides the necessary heat and reliability.

Wing anti-ice on the 737 relies on hot bleed air to warm the wing’s leading edges. That heated air comes from the engine bleed air systems, and the design uses both engines as sources. This redundancy means the anti-ice system can draw from either engine and, if needed, from both, ensuring ongoing anti-ice capability even if one engine isn’t delivering bleed air. In icing conditions, having both engines as sources provides the necessary heat and reliability.

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