Innovation Puzzle

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Across
  1. 5. Space shuttle’s main fuel source
  2. 6. International radio alphabet: A is for --- (5)
  3. 7. Short vertical stabilizing surface at the tail (3
  4. 9. The part of an aircraft that provides lift (4)
  5. 10. An aircraft without a human pilot onboard (4)
  6. 12. Boeing began building these before aircraft
  7. 13. Device used to control up and down movement of an airplane’s nose (8)
  8. 14. System used by aircraft for location and navigation (5)
  9. 16. Oldest commercial airline partner of Boeing (6)
Down
  1. 1. Boeing’s spacecraft for NASA missions (9)
  2. 2. Speed faster than sound (4)
  3. 3. What tool is used to secure terminals to wires? (7)
  4. 4. plane without engines, glides through air (6)
  5. 8. What material is commonly used for wire insulation in aircraft?
  6. 11. International distress signal by pilots (5)
  7. 12. Supersonic Concorde’s cruising speed was twice the speed of ___ (3)
  8. 15. Motion of aircraft around vertical axis (3)