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Thread: IFR Flight Levels
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Old 22nd Jun 2010, 12:02
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hvogt
 
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Is it a regional thing that differs from ICAO?
Yes, exactley. According to ICAO Annex 2 there are only semicircular cruising levels. The quadrantal rule is a lovely British speciality (cf UK AIP GEN 1-7-9).
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