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.
airway airÂ·way (Ã¢r'wÄ') n. Any of the various parts of the respiratory tract through which air passes during breathing. A device used to gain an unobstructed route to convey air into and out of the lungs during general anesthesia or when the respiratory passage is blocked.