Airport and international

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Across
  1. 1. passenger
  2. 2. type of plane
  3. 3. airport security
  4. 4. stuff you can bring on a plane
  5. 6. airline
  6. 9. allowed if declared
  7. 10. unsecure side of airport
  8. 11. type of runway incursion
  9. 13. required to board plane internationally
  10. 14. required to enter country
  11. 16. wall of aircraft
  12. 18. secure part of airport
Down
  1. 1. alphabet
  2. 3. covered walkway
  3. 5. area adjacent to terminal
  4. 7. go on to plane
  5. 8. not allowed at all
  6. 12. security
  7. 15. cargo compartment
  8. 17. machine for scanning