2.0 — 140 — 12 October 2012
Prepare for flight
Operational planning
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.
Obstacle clearances for descent
The obstacle clearance for descent requires that no obstacles appear in a zone above 25 m
HALP.
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