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
Amelia Earhart Becomes First Woman to Fly Solo across the Atlantic On May 20-21, 1932, Earhart accomplished her goal of flying solo across the Atlantic Ocean. She took off from Newfoundland, Canada, at 7:12 p.m. on May 20, in her Lockheed Vega.