| 31. | Air corridors often are shared, but planes traveling in opposite directions are supposed to fly at different altitudes.
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| 32. | The collision virtually forced the Indian air force to partially open up air corridors over New Delhi skies.
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| 33. | Planes are separated vertically by just 1, 000 feet ( 330 meters ) in the same air corridor.
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| 34. | To discourage a similar incident this weekend, Cuban authorities plan to ban low-flying craft from international air corridors.
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| 35. | Air corridors often are shared, although planes traveling in opposite directions are supposed to fly at different altitudes.
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| 36. | But China's refusal to let the graceful silver giant float through its air corridors deflated their round-the-world dreams.
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| 37. | Some 30 warplanes and airliners may be flying at any time, but using different altitudes and air corridors.
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| 38. | Air Corridor operated services to the following domestic scheduled destinations ( at March 2007 ) : Pemba and Quelimane.
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| 39. | Weeks were lost, for example, negotiating a high-altitude air corridor so diplomats can fly directly between the two capitals.
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| 40. | Generally planes are separated vertically by just 1, 000 feet ( 330 meters ) in the same air corridor.
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