Radio, Airport and Maintenance Procedures

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Across
  1. 2. when a manufacturer releases this the drone must download it before it can legally fly?
  2. 5. Provides time critical aeronautical information which is of temporary nature?
  3. 6. What is the letter R in the phonetic alphabet?
  4. 7. what is the most important thing in aviation?
  5. 8. a recording of local weather broadcasts
Down
  1. 1. what must you do before every flight?
  2. 3. the most comprehensive information on a given airport is provided by?
  3. 4. the most common way to communicate at a non-towered airport?