Air Law - Departures
6 important questions on Air Law - Departures
Volume II Construction of Visual and Instrumental Flight Procedures
Departure Procedures General Criteria
Standard Instrument Departure (SID)
The design of an instrument departure procedure is, in general, dictated by the terrain surrounding the aerodrome, but may also be required to cater for ATC requirements
Where no suitable navigation aid is available for track guidance, the criteria for omnidirectional departures are applied
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Parameters of construction of of the turning areas are based on:
- Altitude (turn at altitude/height/point)
- Temperature (ISA + 15)
- Indicated Air Speed (IAS)
- True Air Speed (TAS)
- Wind
- Bank angle (15 degrees average)
- Fix tolerance
- Flight technical tolerances (pilot reaction time 0-3s + bank establishment time = 0-3s total: 6s)
- Turn boundary
- Secondary Areas
Where obstacles do not permit development of omnidirectional procedures, it is necessary to:
Ensure that ceiling and visibility will permit obstacles to be avoided by visual means
Area Navigation (RNAV) Departure
- The procedure must be based on one reference facility composed of a VOR and co-located DME. (indicated on SID chart)
- RNAV systems approved by State of the Operator if:
- The RNAV equipment is serviceable
- Pilot has current knowledge to operate the equipment
- Published VOR/DME facility is serviceable (NOTAMS!!)
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