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9.4.3.2 Information på ICAO-kortet ..............................................................389
9.4.3.3 Målestoksforhold og skalaangivelse .................................................391
9.4.3.4 Højdeangivelse på kortet ..................................................................392
9.5 Retningsbeskrivelse…… ............................................................................. 395
9.5.1 Referenceretning .................................................................................. 395
9.5.1.1 Referencelinjen .................................................................................396
9.5.2 Geografisk nord/sand nord og magnetisk nord .................................... 396
9.5.2.1 Geografisk nord / sand nord (TN) .....................................................396
9.5.2.2 Magnetisk nord .................................................................................397
9.5.3 Jordens magnetfelt ............................................................................... 398
9.5.3.1 Inklination .........................................................................................398
9.5.4 Variation / misvisning / deklination ...................................................... 399
9.5.4.1 Isogoner ............................................................................................401
9.5.4.2 Variation på ICAO-kort ......................................................................401
9.5.4.3 Agonic-line ........................................................................................402
9.6 Magnetismens indflydelse på flyet ........................................................... 402
9.6.1 Deviation og kompasnord ..................................................................... 402
9.6.1.1 Kompasnord (CN) ..............................................................................403
9.6.1.2 Deviation ...........................................................................................403
9.6.1.3 Deviationstabel .................................................................................403
9.6.1.4 Fejlvisning på magnetkompasset ......................................................404
9.6.1.5 Brug af magnetkompas og kursgyro i praksis ...................................404
9.6.2 Overblik – det hele samlet .................................................................... 405
9.6.3 Måling af ruter på kortet ...................................................................... 405
9.6.3.1 True Track (TT) ..................................................................................405
9.6.3.2 Distance ............................................................................................406
9.6.3.3 Samlet overblik - tabel ......................................................................408
9.6.3.4 ”Kan Døde Mus Virke Triste” ............................................................408
9.6.3.5 Heading og track ...............................................................................410
9.6.3.6 Hastighed Knob (kt) ..........................................................................411
9.7 Flyvning i vind…………... .............................................................................. 411
9.7.1 Vindtrekanten ....................................................................................... 411
9.7.1.1 Heading .............................................................................................413
Flyveteori PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 362
