a lower altitude, while a light arrow indicates
it is higher.
Green circle: the green circle gives the
position of the nearest aircraft not equipped
with ADS-B or FLARM, i.e. aircraft with
Mode-C/S transponders. The height
information is given in 100 ft steps and the
circle symbolises the distance. (Example:
2300ft lower)
Collision Warnings
Warning Presentation
If a dangerous situation is recognised during normal operation,
PowerFLARM gives an appropriate warning. The target image
displayed is adjusted in accordance with the nature of the threat.
In dangerous situations, aircraft
posing a threat are presented in
orange or red, depending on the
urgency of the threat. An acoustic
alarm is issued in addition to the
optical alarm.
In very dangerous situations the
zoom factor is automatically adapted
to an appropriate value.
Depending upon the threat level, the acoustic alarm varies in
bleeper frequency and volume.
Large orange coloured arrow: this aircraft
poses a threat of collision. The flight
direction and height difference of the other
aircraft are given to the nearest 100 ft,
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