Aircraft Operations. Volume II - Construction of Visual and Instrument ...

II-1-5-6 Procedures — Aircraft Operations — Volume II
Prescribed minimum approach
altitude will not be less than that
which provides specified obstacle
clearance prior to intercepting
decent path 150 m
492 ft
23/11/06
7 000
Approach
surface
6 000
PAR descent path
5000
Figure II-1-5-1. Determination of final approach OCA/H for PAR
Precision approach radar (PAR) Final missed
approach surface
Initial missed
approach surface
Obstacle clearance
surface (OCS)
4000
600 m
Figure II-1-5-2. Final approach and missed approach areas and surfaces
D
3 000
1 060 m
Final approach area
Protrusion through OCS raises OCA/H
to ensure prescribed clearance
*
Calculated final
approach OCA/H
0.6 θ
2000
* Height loss from Section 1, Chapter 1, Table II-1-1-2
Initial missed
approach area
1 000
Minimum OAC/H if
no obstructions
60 m (200 ft)
D
0
THR
Final missed
approach area
300
200
100
Metres