NZNS 20 runway true 20 NZNS navaid NZKI 173.60589 -42.423131 navaid NZHK 170.9872595 -42.71299272 navaid NZMC 170.133459 -43.76597249 navaid NZMF 167.9226616 -44.67283299 navaid NZQN 168.7444539 -45.02144911