The first flight of the Boeing 767 took place on September 26, 1981, marking a significant milestone in global aviation history. On this date, the prototype of the Boeing 767 took off from Paine Field in Washington State, United States, for its maiden flight. Designed as Boeing’s first wide-body twin-engine jet, the 767 was developed to meet the growing demand for efficient medium- and long-haul air travel, with a capacity of approximately 181 to 375 passengers depending on the model and configuration. During its initial test flight, the Boeing 767 showcased advanced 1980s technologies, including digital flight control systems and modern navigation equipment, setting new standards in safety and fuel efficiency. The successful flight led to rapid adoption of the 767 by airlines worldwide, and by the end of the 1980s, hundreds of these aircraft had been delivered to carriers around the globe. This observance was added to the 1981 Gregorian calendar to highlight the technical and economic significance of the event; the decision to designate this date was made by Boeing and aviation media to recognize the engineering achievements and the impact of the 767 on the airline industry. The first flight of the Boeing 767 is typically commemorated with technical retrospectives, acknowledgment of its role in fleet development, and occasional ceremonial events organized by airlines.