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Boeing 777X

United States (2020)

Detailing the development and operational history of the Boeing 777X Passenger Jet Airliner.

 Entry last updated on 2/6/2018; Authored by Staff Writer; Content ©

  Boeing 777X  
Picture of Boeing 777X Passenger Jet Airliner
Picture of Boeing 777X Passenger Jet Airliner Picture of Boeing 777X Passenger Jet AirlinerPicture of Boeing 777X Passenger Jet AirlinerPicture of Boeing 777X Passenger Jet Airliner

The Boeing 777X family is an offshoot of the Triple Seven line and has secured over 240 orders into 2015.

The original Boeing 777 wide-body passenger jet airliner was introduced in 1995 (with United Airlines) and became a commercial success for the company with over 1,320 examples completed to date and operators spanning the globe. Building upon this established and successful framework, Boeing is set to introduce a follow-on design in the series as the advanced "777X" - marketed as the "most efficient twin-engine jet in the world" by Boeing. The model also utilizes lessons learned and qualities featured in the newer 787 "Dreamliner" series.

The 777X continues the fine lines established by the 777 and 787 with its slim, rounded fuselage, upward-canted wing mainplanes and single-finned tail. The cockpit sits a short distance away from the nose cone, offering excellent vision for the cockpit crew of two. Each wing fits an underslung engine nacelle of considerable diameter. The wings themselves utilized lightweight, but strong, composites in their construction offering a good balance of function and efficiency. Inspiration drawn from the Dreamliner is obvious in the twin-aisle passenger cabin with its large viewing windows positioned along the fuselage sides.

The engine of choice t power the new product is the General Electric Aviation "GE9X" turbofan developed exclusively with the 777X in mind - some of the largest propulsion systems ever fitted to a two-engined passenger jet airliner.

One of the more interesting design qualities of the 777X is in its wingtips which are designed to fold up when ground running. This provides the longer span assemblies with an inherent self-shortening feature giving the new aircraft the capability to operate in any existing major airport despite its added span when flying. Unfolded, the wings hold a span of 235.4 feet while, when folded, the span decreases to 212.7 feet to allow access to any standard passenger gate area.
Picture of the Boeing 777X Passenger Jet Airliner
Picture of the Boeing 777X Passenger Jet Airliner

Currently (2015), the 777X is set to be represented by two distinct model forms, the 777-8X (the standard offering) and the 777-9X (featuring a stretched fuselage with three-class passenger configuration). The former showcases an inherent range of 8,700 nautical miles with passenger seating from 350 to 375 persons and the latter sports a shorter range of 7,600 nautical miles though with seating for 400 to 425 passengers. Stated individual unit prices are $371 million and $400 million respectively.

Service introduction for the 777X is planned for 2020 as development is being undertaken as of this writing (2015). Confirmed orders of the 777-8X total 53 while the 777-9X has reached 243 examples for a total of 306 aircraft with operators in Germany, Hong Kong, Japan, Qatar and the UAE. The 777-8X is in direct competition with the French Airbus A350-100 product (detailed elsewhere on this site). The 777-9X is said by Boeing representatives to have no true existing industry match as of yet.

July 2016 - Boeing engineers are contemplating a stretched version of the 777X twin-engined transport to fill the gap between -8X and -9X models. The new addition is tentatively recognized as the 777-10X.

February 2018 - Boeing plans early-2019 for a first-flight of its 777X.
Boeing 777-9X Specifications
National Flag Graphic
United States
Year: 2020
Status: In-Development
Type: Passenger Jet Airliner
Manufacturer(s): Boeing Company - USA
Production: 243
Supported Mission Types
Ground Attack
Close-Air Support
Airborne Early Warning
Electronic Warfare
Aerial Tanker
Passenger Industry
VIP Travel
Business Travel
Special Forces
Crew: 2
Length: 251.64 ft (76.7 m)
Width: 235.56 ft (71.80 m)
Height: 64.63 ft (19.70 m)
Empty Weight: 362,003 lb (164,202 kg)
MTOW: 774,925 lb (351,500 kg)

Installed Power
2 x General Electric GE9X turbofan engines of 105,000 lb thrust each.

Standard Day Performance
Maximum Range: 8,746 mi (14,075 km; 7,600 nm)


Operators List
Germany; Hong Kong; Japan; Qatar; United Arab Emirates

Series Model Variants
• 777X - Base Series Designation; folding wingtip feature
• 777-8X - 350 passenger seating capacity; 9,300 mile range; service scheduled for 2022.
• 777-9X - 400+ passenger seating capacity; 8,200 mile range; service scheduled for 2020.
• 777-10X - Proposed extended version.

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