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

I-3-5-2 Procedures — Aircraft Operations — Volume II
b) sectors may be defined in which flight is not permitted;
c) sectors shall be described by bearings and distance from the centre of the turn area;
d) sectors shall diverge at least 15° either side of the controlling obstacle; and
e) when more than one sector is published, the promulgated gradient shall be the highest PDG required in any
sector that may be entered. The altitude/height to which the gradient applies must permit the subsequent use of a
3.3 per cent gradient (Cat H, 5.0 per cent) through that sector, a succeeding sector, or to an altitude/height
authorized for another phase of flight (i.e. en-route holding or approach). A fix may also be designated to mark
the point at which a gradient in excess of 3.3 per cent (Cat H, 5.0 per cent) ceases.
23/11/06
5.3 CHARTED ALTITUDES/FLIGHT LEVELS
Departure procedures may be developed to procedurally separate air traffic. In doing so, the procedure may be
accompanied by altitudes/flight levels that are not associated with any obstacle clearance requirements, but are
developed to separate arriving and departing air traffic procedurally. These altitudes/flight levels shall be charted as
indicated in Table I-3-5-1. The method of charting of altitudes/flight levels to correctly depict the designed procedure
may differ between avionics manufacturers.
5.4 OTHER REQUIREMENTS
a) When departures are limited to a particular category(ies) of aircraft, the procedure shall be clearly annotated.
b) Where a suitable fix is available, a procedure design gradient requirement may be promulgated by specifying a
DME distance/altitude or position/altitude restriction (e.g. “reach 5000 ft by DME 15” or “reach 3500 ft by
VWXYZ”).
c) A turn may be specified at a fix or an altitude/height, e.g. “at DME 4 turn right, track 170°” or “at 2 500 ft turn
left track to VWXYZ”.
d) When it is necessary, after a turn, to track to intercept a specified radial/bearing, the procedure will specify:
1) the turning point;
2) the track to be made good; and
3) the radial/bearing to be intercepted;
(e.g. “at DME 4 turn left, track 340° to intercept BNE R020 (VOR)”; or “at DME 2 turn left, track 340° to
intercept 010° track to STN (NDB)”).
e) Where a PDG in excess of the standard gradient is required to provide obstacle clearance, an alternative
procedure using a lower PDG may be published for operations in VMC only.
f) Gradients to a height of 60 m (200 ft) or less due to close-in obstacles shall not be promulgated. A note shall be
published stating that close-in obstacles exist.