The 777X is the third generation of the original 1999’s 777 dual-engine wide-body airplane developed by US-based Aerospace conglomerate Boeing.

Launched in 1990 with a first-order from US-based United Airlines, The Boeing 777 was the largest twinjet ever developed, taking full advantage of higher engine reliably and newly developed standards and regulations for Extended Twin-engine Operations (ETOPS).

The first 777 completed its first flight on June 12^th, 1994 prior to entering service in 1995 with launch customer United Airlines. Original 777 models were powered with a choice of engines from three manufactures: General Electric, Pratt & Whitney, and Rolls Royce. The following generations dropped the multiple-selections in favor of the record-breaking GE90-115B engine from General Electric equipping both the very popular 777-300ER and the less popular, ultra long range 777-200LR. The 777 completely changed the commercial long-haul operation contributing to the large decline of the four-engine airliners. 

Launched in 2013, The third generation 777X comes in two models, the 777-8 and 777-9 both featuring stretched fuselage with an advanced composite wing and the latest generation GE9X engine from General Electric. The first 777-9 model completed its first flight on January 25^th,2020 kicking-of the certification campaign prior to projected service entry in 2021.   

The most noticeable feature of the 777X is the folding wingtips addition, allowing to fit the 235 feet wingspan airplane within standard airport gates.