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9 LINE MEDEVAC REQUEST
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In order to establish an HLZ the following considerations will be taken into account:
1) Tactical suitability - Able to be secured and free from enemy proximity to camp.
2) Size of landing site - The number and type of helicopters will determine the size of the clearance area required. In general, allowable distances between utility helicopters are 50 meters on line or in echelon and 70 meters in trail. Allowable distances for cargo helicopters are 75 and 100 meters respectively.
3) Surface conditions - The landing site should be free of rocks, logs, and heavy dust or loose snow.
4) Ground slope - The maximum permissible ground slope to land helicopters is 15%. If the ground slope is between 7% and 15%, the helicopters must be landed side-slope. Upon selection of an HLZ, the React Commander will report the approximate side-slope to the COC.
5) Routes in and out of the HLZ - The HLZ must have routes in and out for both ground forces and the helicopters. Most helicopters require a 10 to 1 ratio of take-off runway to obstacle height to clear the HLZ on take off.
6) Winds - Helicopters should land and take off into the wind if at all possible. Maximum allowable crosswinds are 10 knots and maximum allowable tailwinds are 5 knots.
7) Obstacles - Remove all obstacles if possible, and mark those that would not be apparent to the aircraft.