Aviation Cross Word Puzzle

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Across
  1. 4. uncontrolled firing of the fuel/air mixture in advance of normal spark ignition
  2. 5. Increases descent angle without increase in airspeed
  3. 7. Transponder that shows squawk code
  4. 8. Don't think, do
  5. 10. Unburned charge in a cylinder explodes instead of burning normal
  6. 11. Slip/skid indicator
  7. 13. Showing off
  8. 14. Continuous broadcast of recorded non control information
  9. 16. Arc that shows the range for flap operating speeds
  10. 17. Becomes inoperative if pitot tube is clogged
  11. 20. Notices to air missions
  12. 22. Lack of oxygen to the brain
  13. 23. Reason for most preventable accidents
  14. 25. Warnings of weather conditions hazardous to all aircraft
  15. 27. Arc that shows the range for normal operating speeds
Down
  1. 1. Indicates aircraft movement about roll and yaw axis
  2. 2. The result of a stalled plane
  3. 3. Warnings of weather conditions hazardous to small single engine aircraft
  4. 5. Disrupts smooth airflow over wing and decreases its lifting capability
  5. 6. Traffic and terrain appear further away than actual distance
  6. 9. Not following the rules
  7. 12. Shows pilot on radar and their altitude
  8. 15. Transponder that shows altitude
  9. 17. The distance from the datum line
  10. 18. Automatic weather operating system
  11. 19. Water, snow, or another liquid prevents wheel contact with runway
  12. 21. Has a magenta cone on charts, exercise extreme caution, low altitude, high speeds
  13. 24. Weight multiplied by arm
  14. 25. Search and rescue
  15. 26. To protect public figure or when there's an issue