2.0 — 193 — 12 October 2012
Safety
Obstacle clearances
According to aviation regulation it is mandatory to have an area with a radius of 30 m centered
on the take-off location, clear of any obstacles that are not under the control of the pilot.
22.2.4 Obstacle clearances for cruise flight
Obstacle clearance for cruise flight requires that no obstacles appear in a zone between the
flight height and 50 m below it.
This zone extends over an area that covers all flight lines, that is the scan area plus ~400 m
extra at each end of the scan lines.
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