文档介绍：CAT II/III Workshop
Flight Operations View
CAT II/III Flight Operations View
General Concepts ICAO/JAA/FAA
Approval Process
Aircraft Requirements
Aerodrome Requirements
Air Operator
CAT II
CAT II DH<200 (60m)>=100(30m) and RVR >= 1200ft (350m) (JAA 1000 (300)
Sufficient visual reference for a manual landing
Equivalent level of safety by;
airborne equipment
ILS Facility
CAT II
Equivalent level of safety by:
visual aids
flight crew training/procedures
ATC procedures
aircraft maintenance
airfield maintenance
criteria for obstacle clearance
CAT III
ICAO/FAA - CAT IIIA DH <100(30m) or no DH and RVR >= 700ft (200m) (JAA always DH)
ICAO/FAA - CAT IIIB DH <50ft (15m) or no DH RVR < 700ft (200m) not <150ft (50m) (JAA 250ft(75m))
ICAO/FAA - CAT IIIC 0/0 (No JAA)
CAT III
Not sufficient references to permit visual landing
Minimum to allow pilot to decide whether aircraft will land in touchdown zone (CAT IIIA) and ensure safety during roll-out (CAT IIIB)
Desired level of safety achieved with more stringent requirements
DH/DA
Decision altitude/height (DA/H) - is the wheel height above the runway elevation by which a go-around must be initiated unless adequate visual reference has been established and the aircraft position and approach path have been assessed as satisfactory to continue the approach and landing in safety (JAA)
Decision Height
JAA - for CAT II and CAT IIIA the visual reference to contain not less than a 3 light segment
JAA - CAT IIIB visual reference to contain one centreline light
Alert Height
Alert Height - height above runway based on the characteristics of the aeroplane and its fail operational automatic landing system, above which a CAT III approach would be discontinued and a missed approach initiated if a failure occurred in one of the redundant parts of the automatic landing system, or in the relevant ground equipment
Alert Height
Fail-operational automatic landing system - if in the event of a failure, the approach, flare and landing can