Position Assessment
- Radar
- ATC, Meteorology, Aircraft, Ship, Military
- DF
- Topographical features
- Sunrise/Sunset position lines
- Other methods
- Thunderstorm, Cloud formation, Showers, Bush fires, Smoke areas
- Co-ordinate actions
- Town street lights on/off, activating aerodrome lights
- Means by which the position of a distressed aircraft may be determined in the shortest possible time