Aircraft Navigation

1234567891011121314151617181920212223242526272829303132333435363738394041
Across
  1. 3. Aviation angles measured clockwise from here
  2. 5. Aviation map
  3. 7. Slice not containing center of Earth
  4. 8. Backup for heading indicator
  5. 11. Direction of runway 36
  6. 13. Right triangle side facing reference angle
  7. 14. Parallelogram with 4 equal angles
  8. 17. TOA
  9. 19. Instrument for flying precise course
  10. 21. Longest side in right triangle
  11. 24. Hometown of Prime Meridian
  12. 25. Line of longitude
  13. 29. Right triangle side forming reference angle
  14. 30. digital Sectional map
  15. 32. Formula for hypotenuse length
  16. 33. Sectional color for city lights
  17. 35. Compass errors from Earth's field
  18. 36. CAH
  19. 38. Geographic north
  20. 41. Map line running east-west
Down
  1. 1. Sense for measuring angles in aviation
  2. 2. VFR
  3. 4. Navigation not requiring eyesight
  4. 6. Map line running north-south
  5. 8. Compass errors from airplane's magnetic field
  6. 9. Subdivision of minutes
  7. 10. Number of minutes in a degree
  8. 12. X-Y plane
  9. 15. Slice containing the center of Earth
  10. 16. Reference line for latitude
  11. 18. Magnitude and direction
  12. 20. Type of triangle with a 90 deg. angle
  13. 22. Shape used to add vectors
  14. 23. Area 51
  15. 25. Sub-division of degree
  16. 26. Terrain height above sea level
  17. 27. Navigation system based upon satellites
  18. 28. Line of latitude
  19. 31. Brazil is ______ latitude
  20. 34. Heading 225
  21. 37. Wind perpendicular to runway
  22. 39. Florida is ______ longitude
  23. 40. SOH