It might be news to you guys

But why s planes mostly don’t need deicing rather than M, X and L planes?

Something I noticed previously; There is a certain timer that runs in the background and if the plane is handled within that time the ice ‘doesn’t form’ on the plane and hence they don’t need de-icing.
(Correct me if I’m wrong)

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You are correct, sometimes even happens on M aircraft too ( although much rarer)

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It’s interesting because that’s not really how it works in real life. We de ice our smaller jets like E175s and CRJs even though they only have 30-40 minute turnaround times.

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