Category 1 is always the greatest level of hazard (that is, it is the most hazardous within that class). If Category 1 is further divided, Category 1A within the same hazard class is a greater hazard than category 1B. Category 2 within the same hazard class is more hazardous than category 3, and so on.
Correction: An earlier version of this story incorrectly stated that Charles Nungesser and Francois FranÃ§ois coli would have been the first pilots to make a nonstop transatlantic. Flight a pair Of british pilots made such a flight in. 1919
The first airplane to take flight was built by the Wright brothers  in Ohio USA and was transported first to North Carolina and flown  for its first time there.  The brothers Orville and Wilbur Wright were two Americans who are  gener â¦ ally credited with inventing and building the world's first  successful airplane and making the first controlled, powered and  sustained heavier-than-air human flight, on 17 December  1903 in Kitty Hawk, NC on December 17, 1903.