b'Ongoing Precision Instrument Approach Capabilities Precision Instrument Approaches Table A-3In addition to runway separation and configuration, airfield capacity can be affected greatly by how the runways are equipped forMSPCAT 1CAT 2CAT 3inclement weather. A number of precision instrument approachesRunways30R30L12Lcontinue to be available at MSP as summarized in the table to 12Rthe right.35Notes: The term decision height is defined as the height at which a decisionmust be made during a precision approach to either continue the landing maneuver or execute a missed approach. Precision approaches are categorized based on decision height and the horizontal visibility that a pilot has along the runway. Visibility values are expressed in statute miles or in terms of runway visual range (RVR) if RVR measuring equipment is installed at an airport. The different classes of precision instrument approaches are:i. Category I (CAT I)provides approaches to a decision height down to 200 feet and a basic visibility ofstatute miles or as low as 1,800 feet runway visual range (RVR).ii. Category II (CAT II)provides approaches to a decision height down to 100 feet and an RVR down to 1,200 feet. iii. Category IIIa (CAT IIIa)provides approaches without a decision height (down to the ground) or a decision height below 100 feet and an RVR down to 700 feet. iv. Category IIIb (CAT IIIb)provides approaches without a decision height or a decision height below 50 feet and an RVR down to 150 feet. v. Category IIIc (CAT IIIc)provides approaches without a decision height and RVR. This will permit landings in 0/0 conditions, that is, weather conditions with no ceiling and visibility as during periods of heavy fog.Source: MSP Airfield Operations, FAAx'