Aviation Term
ILS categories
Definition
Categories of instrument approach procedures allowed at airports equipped with instrument landing systems: Category I (200ft height, 1,800ft RVR); Category II (100ft height, 1,200ft RVR); Category IIIA (no DH, 700ft RVR); Category IIIB (no DH, 150ft RVR); Category IIIC (no DH, no RVR minimum)
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