2.0 — 192 — 12 October 2012
Safety
Obstacle clearances
Exceptions
A landing on the intended landing site resulting in a damaged aircraft can not be seen as a
crash, except if there is collateral damage.
22.2 Obstacle clearances
22.2.1 Definition
Obstacle clearance in a zone requires that no obstacles penetrate that zone.
22.2.2 Obstacles
Obstacles are:
● trees
● buildings
● hills
● antennas
● power and telephone lines
● water
● people
● ...
22.2.3 Obstacle clearances for take-off
Obstacle clearance for take-off requires that no obstacles appear in a zone between a safety
angle of 8º and the launch angle over a distance of 500 m from the take-off location, and below
the safety angle over a distance of 100 m (this is typically called the Ground Safety Zone
(GSZ)).
This zone extends over an area between the launch direction and an offset of 45º to the right
and 45º to the left.
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