Origin [edit]. The systematic use of belt color to denote the rank was first used by Kano Jigoro, the founder of judo, who first devised the colored belt system using obi (sash), and awarded the first black belts to denote a Dan rank in the 1880s. Previously, Japanese Koryu instructors tended to provide certificates.
Everything for a safe and comfortable trip. Air safety is the theory, investigation, analysis, and categorization of flight failures (aircraft incidents and accidents), and the prevention of such failures through regulation, education and training.
See also. 1  Victor airways. 2  Gunston, Bill (2004). 3  FAA regulations 5-3- 4 4. Airway (definition)  The term airway is used by aviation professionals including ICAO, but other terms have been used or misused by non-specialist sources, sometimes to mean the same 1  thing. The Evolution of Airway Lights and Electronic Navigation Aids.