What is difference between a Cat IIIA, Cat IIIB, and Cat IIIC ILS approach?

The difference between a Cat IIIA, Cat IIIB, and Cat IIIC ILS approach?

A CAT III operation is a precision approach at lower than CAT II minima.

Sub-categories are listed below.

A category III A approach is a precision instrument approach and landing with no decision height or a decision height lower than 100ft (30m) and a runway visual range not less than 700ft (200m).

A category III B approach is a precision approach and landing with no decision height or a decision height lower than 50ft (15m) and a runway visual range less than 700ft (200m), but not less than 150ft (50m).

A category III C approach is a precision approach and landing with no decision height and no runway visual range limitation.

 

Post Author: VabbSpotter