Complete the following crossword

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Across
  1. 2. abbreviations of the International Civil Aviation Organization
  2. 3. is a person who flies aircraft
  3. 5. Transport by means of aircraft
  4. 7. synonym of secure
  5. 8. the operation of aircraft
  6. 9. (V)to transport people or goods by aircraft
Down
  1. 1. journey in an aircraft:
  2. 3. synonym of aircraft
  3. 4. strong sudden movements within air or water
  4. 6. the act of directing a ship, aircraft, etc. from one place to anothe