In-development variants (777X) 777-8 (778) 777-9 (779) 777-200. The 777-200 was the first and original type of 777. It was first flown on June 12, 1994 and entered service with United Airlines on June 7, 1995. It was made to fly up to 440 people in a single class layout, and could fly 5240 nautical miles (9700 km). 2 days ago  One of the four 777X test aircraft has gone to Fairbanks Alsaka for cold soak tests as part of its certification program. WH004, registered N779XZ has ferried from Seattle to Fairbanks for a variety of tests. Aircraft need to be tested to examine how extreme cold affects various parts of the aircraft. READ: Qatar Airways. In June 1995, the 777-200 entered service with United Airlines marking the start of the plane's game-changing career. United Airlines' first Boeing 777.

1. The United Boeing 777-200 is a long-range wide-body twin-engine jetliner with a cruise speed of 550mph and a wingspan of 199 feet and 11 inches.
2. Our first #777X flight test airplane made its runway debut! Our teams performed a series of low-speed taxi tests, marking the first time this plane moved on its own power. This is one of many tests before the 777X takes to the skies later this year.

The Boeing 777X won't be delivered to airlines until late 2023. Take a look at the enormous new flagship Boeing hopes will be its redemption.

• Boeing's newest aircraft, the Boeing 777X, flew for the first time in January 2020 after lengthy delays.
• It's the largest twin-engine jet in the world and Boeing's latest new aircraft to fly since the grounding of the 737 Max.
• Pandemic-related delays, however, have further pushed back its first delivery until late 2023.
• Visit Business Insider's homepage for more stories.

Boeing's latest history-making plane continues to be delayed.

The Boeing 777X will not be delivered until late 2023, its manufacturer announced on Wednesday, further delaying the aircraft's debut well-beyond the planned time frame of 2020. Boeing attributed the delay to numerous factors including the pandemic, reduced demand, and new certification requirements.

The twin-engine jet first graced the skies in January 2020 when it lifted off from Paine Field in Everett, Washington following a day of weather delays. A total of four test aircraft now roam the skies, pushing the limits of the aircraft in advance of its certification to fly passengers.

Boeing designed the 777X to be the first next-generation variant of Boeing's popular 777 product line, which first flew in the 1990s and currently sees service with the world's leading airlines. The plane is equipped with new engines developed by General Electric and a longer pair of wings, enabling it to carry more passengers while operating more efficiently than its predecessor aircraft, effectively replacing the Boeing 747 Jumbo Jet.

When it first took flight, the 777X became the largest twin-engine jet aircraft to ever fly. Though a milestone aircraft for Boeing, its 2020 aerial debut was hampered by the crash of an Ethiopian Airlines Boeing 737 Max and the subsequent worldwide grounding of the narrow-body jet due to issues with the aircraft's software stemming from its development.

Take a look at the plane Boeing hopes will be its redemption.

Boeing 777x United Airlines