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
Best Answer: First transatlantic flight May 8 - May 31, 1919. U.S. Navy Curtiss flying boat NC-4 under command of Albert Read, 4,526 statute miles (7,284 km), from Rockaway, New York, to Plymouth, England, via Trepassey, Newfoundland, Azores, Lisbon, Portugal, and other intermediate stops, in 53 hours, 58 minutes.