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9.4.3.2 Information på ICAO-kortet ..............................................................819

9.4.3.3 Målestoksforhold og skalaangivelse .................................................821
9.4.3.4 Højdeangivelse på kortet ..................................................................822

9.5 Retningsbeskrivelse…… ............................................................................. 825

9.5.1 Referenceretning .................................................................................. 825

9.5.1.1 Referencelinjen .................................................................................826

9.5.2 Geografisk nord/sand nord og magnetisk nord .................................... 826
9.5.2.1 Geografisk nord / sand nord (TN) .....................................................826

9.5.2.2 Magnetisk nord .................................................................................827

9.5.3 Jordens magnetfelt ............................................................................... 828
9.5.3.1 Inklination .........................................................................................828

9.5.4 Variation / misvisning / deklination ...................................................... 829

9.5.4.1 Isogoner ............................................................................................831
9.5.4.2 Variation på ICAO-kort ......................................................................831

9.5.4.3 Agonic-line ........................................................................................832

9.6 Magnetismens indflydelse på flyet ........................................................... 832

9.6.1 Deviation og kompasnord ..................................................................... 832

9.6.1.1 Kompasnord (CN) ..............................................................................833
9.6.1.2 Deviation ...........................................................................................832

9.6.1.3 Deviationstabel .................................................................................833

9.6.1.4 Fejlvisning på magnetkompasset ......................................................834
9.6.1.5 Brug af magnetkompas og kursgyro i praksis ...................................834

9.6.2 Overblik – det hele samlet .................................................................... 835

9.6.3 Måling af ruter på kortet ...................................................................... 835

9.6.3.1 True Track (TT) ..................................................................................835
9.6.3.2 Distance ............................................................................................836

9.6.3.3 Samlet overblik - tabel ......................................................................838
9.6.3.4 ”Kan Døde Mus Virke Triste” ............................................................838

9.6.3.5 Heading og track ...............................................................................840

9.6.3.6 Hastighed Knob (kt) ..........................................................................841
9.7 Flyvning i vind…………... .............................................................................. 841

9.7.1 Vindtrekanten ....................................................................................... 841
9.7.1.1 Heading .............................................................................................843

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