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flight levels |
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Surfaces of constant atmospheric pressure which are related to a specific pressure datum, 1013.2 mb (29.92 in), and are separated by specific pressure intervals. (Flight levels are expressed in three digits that represent hundreds of feet; e.g., flight level 250 represents a barometric altimeter indication of 25,000 feet and flight level 255 is an indication of 25,500 feet.) |
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? Mentioned in | ? References in periodicals archive | |
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The past 12 months have been a time of cautious optimism with flight levels growing steadily following a long period of uncertainty in the industry," said Eddie Bell, Chairman of OAG. For the first time since the attacks, worldwide flight levels are even with 2001. RVSM compliance requires highly accurate, independent sources of altitude information for operation between flight levels of 29,000 and 41,000 feet. |
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