What is CAT 1 CAT 2 and CAT 3?
CAT I relies only on altimeter indications for decision height, whereas CAT II and CAT III approaches use radio altimeter (RA) to determine decision height. An ILS must shut down upon internal detection of a fault condition.
What are CAT 2 and CAT 3 approaches?
The Cat II ILS has a DH of less than 200 feet, but not less than 100 feet, with visibility minimums of between 1,800 RVR and 1,200 RVR. The Cat III ILS, which includes subcategories a, b, and c, is in a class all its own. Cat IIIa approaches may be flown to a 50-foot DH, with RVR as low as 700 feet.
What is cat3 landing?
The Netaji Subhas Chandra Bose International Airport (NSCBI) in India has introduced the CAT III-B Instrument Landing System (ILS) that allows flights to land safely in low visibility. CAT III-B ILS lets aircraft land with Runway Visual Range (RVR) of up to 50m with a decision height of 15m.
What is CAT II in aviation?
“Category II (CAT II) operation” means a precision instrument approach and landing with a. decision height lower than 200 feet (60 meters) but not lower than 100 feet (30 meters) and a. RVR of not less than 350 meters; “Category IIIA (CAT IIIA) operation” means a precision instrument approach and landing with.
What does CAT III mean in aviation?
Cat i is the least restrictive and Cat iii is the most restrictive, all the way down to “zero/zero”. Zero feet ceiling and zero feet visibility (or meters). Note: RVR is Runway Visual Range.
What is a CAT III?
CAT III is for distribution wiring, including main busses, feeders, and branch circuits with permanently installed loads. The highest is CAT IV, which is installation at the origin or at the utility level. Our devices are rated for 600V at CAT IV, for applications between 600 and 750V, they are CAT III rated.
What are the standard CAT II approach operations?
Standard CAT II Approach Operations 1. Scope. This order authorizes CAT II approaches with a DH as low as 100 feet and visibility minimums as low as RVR 1200. This order addresses the ground equipment requirements necessary for approval of a CAT II approach. For information on other requirements, refer to AC 120-118.
What are the minimums for CAT II ILS approaches?
The minimums (which on any ILS approach also means the missed approach point) on a CAT II ILS are predicated on a radio altimeter altitude or RA. Minimums are usually around one hundred feet above touchdown.
What is the minimum DH required for a CAT II approach?
This order authorizes CAT II approaches with a DH as low as 100 feet and visibility minimums as low as RVR 1200. This order addresses the ground equipment requirements necessary for approval of a CAT II approach. For information on other requirements, refer to AC 120-118. 2. ATCT.
What is a Category III approach to aviation?
There are three kinds of Category III approaches, CAT IIIa, CAT IIIb and CAT IIIc. When you get down to flying a bird capable of CAT IIIc it can actually land, stop and then taxi in with zero visibility.