| 21. | This worked until their jets iced up in flight.
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| 22. | When roads iced up the day after Christmas, neighboring towns sent their trucks out again.
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| 23. | The wings iced up on approach to landing in Shreveport, and the plane lost altitude.
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| 24. | The wings iced up and they attempted to land.
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| 25. | The reservoirs are iced up from October to May.
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| 26. | "We live in the country and the roads are still iced up, " he said.
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| 27. | During the winter, the lake is often completely frozen over with ice up to thick.
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| 28. | So, in humid near-freezing conditions, the carburetor will be colder, and tend to ice up.
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| 29. | "People are using the Rhine ( which isn't iced up ) as much as possible ."
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| 30. | Military pilots sent to observe the unresponsive craft reported that the cockpit windows were iced up.
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