English class Polar route

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Across
  1. 3. Forming elements of the airframe structure of a wing, repeated at frequent intervals, forming a skeletal shape for the wing
  2. 6. Airport used in case of diversion
  3. 9. A mixture produced by combining several types of fuel together (clue : also used for coffee)
  4. 10. Device measuring fuel temperature
  5. 11. Quicker way to get somewhere
  6. 12. A natural inclination or tendency
  7. 15. (2 words)The lowest temperature at which a substance will flow under given conditions.
  8. 16. (v) to disembark from an airplane.
Down
  1. 1. (2 words)Temperature at which crystals, which form in the fuel as its cools, completely disappear when the fuel is rewarmed.
  2. 2. (acronym) Thanks to it, the engine oil is cooled whilst the fuel is heated up.
  3. 4. Main structural member of the wing running spanwise between fuselage and wingtip
  4. 5. Yellowish substance made up of hydrocarbons, fats, oil, whose crystals can Restrict fuel flow
  5. 7. Container holding the aircraft fuel
  6. 8. (v) to throw (cargo, fuel, etc..) overboard from a boat or aircraft to lighten it or make it safer in an emergency
  7. 9. (2 words)Device responsible for delivering fuel to the aircraft engine before the engine starts or to supply fuel to the airplane engine if normal conditions fuel supply fails.
  8. 13. Adjective to designate unrefined oil
  9. 14. (Acronym) the aircraft system used for displaying engine parameters and alerting crew to system configuration or faults