gistfile1.txt

he_deploy_chute = {
	private ["_chute","_dir"];
	_unit = _this select 0;
	_unit setCaptive 1;
	_unit allowdamage false;
    waitUntil {(position _unit select 2) <= 500};
    if (vehicle _unit != _unit) exitWith {};
    _chute = createVehicle ["Steerable_Parachute_F", position _unit, [], direction _unit, 'FLY'];
    _chute setPos (getPos _unit);
    _unit assignAsDriver _chute;
    _unit moveIndriver _chute;
    waitUntil {isTouchingGround _unit};
    _unit allowdamage true;
    _unit setCaptive 0;
};

USAGE 
put your dude into the air
put this into
if(!isserver) then { [player] execVM he_deploy_chute };