Related by context. Frequent words. (Click for all words.) 81 altitudes 56 elevation 53 cruising altitude 52 altitude sickness 51 acclimatization 50 airspeed 47 elevations 47 altimeter 45 descents 44 mountainous terrain 43 temperature 43 acclimatize 43 barometric pressure 43 mountain 43 wind shear 42 troposphere 42 ft 42 High Altitude 42 Andes Mountains 42 crosswinds 42 Andes mountains 42 terrain 41 ridge 41 humidity 41 hilly terrain 41 latitudes 41 Mount Kilimanjaro 41 glacier 41 rough terrain 41 flying 41 paraglider 40 velocity 40 endurance 40 takeoff 39 temperatures 39 Himalayas 39 paragliding 39 Kilimanjaro 39 ambient temperatures 38 Andes 38 Mount Everest 38 steep terrain 38 gliders 38 airborne 38 mountain peaks 38 speeds 38 climatic conditions 38 mountain ridge 38 treeline 38 acclimatise 38 Aconcagua 38 pressurization 38 alpine 38 rugged terrain 38 supersonic speeds 38 plane 38 thermals 37 slopes 37 higher elevations 37 supersonic 37 mountains 37 ascents 37 airship 37 ionosphere 37 atmospheric 37 terrains 37 hypersonic 37 ambient temperature 37 velocities 36 equatorial 36 crosswind 36 #ft [003] 36 distances 36 topography 36 slope 36 aircrew 36 UAV 36 windy 36 hang glider 36 mountainside 36 fatiguing 36 equator 36 ascent 36 glaciers 36 plateaus 36 flight 36 jet stream 36 aerobic capacity 36 steep incline 36 height 36 Cho Oyu 36 twin engine turboprop 35 Mt Everest 35 tallest mountain 35 plains 35 Antarctica 35 mountaintop 35 climatic 35 mountain slopes 35 weightlessness 35 inclines