The Boeing 767-400ER (Extended Range) is a variant of the Boeing 767 family of aircraft. It was first introduced in 1998 by the Boeing Company, and it is one of the most popular wide body aircraft in the world today.

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The 767-400ER was designed to meet the needs of airlines that wanted a larger capacity aircraft, but also wanted increased range and performance. The range of the 767-400ER is 6,490 nautical miles, which is an increase of over 1,000 nautical miles from the 767-300ER. The increased range of the 767-400ER allows it to fly nonstop from the United States to Europe and Asia.

The 767-400ER is also one of the most fuel-efficient and reliable aircraft in the world. Its two engines are General Electric CF6-80C2B7F and Pratt & Whitney PW4062, both of which are some of the most reliable engines in the world. The 767-400ER also has advanced avionics and navigation systems, as well as a significantly updated cabin interior.

The 767-400ER is one of the most popular aircraft in the world today. It is used by many airlines for international routes, and it is also commonly used for cargo operations. In fact, the 767-400ER is the most popular cargo aircraft in the world.

The 767-400ER has been involved in a few safety related incidents, but nothing that can be considered major. In 2003, a 767-400ER operated by American Airlines had a fire in one of its engines, but the aircraft and passengers were safely evacuated and the fire was extinguished. In 2011, a 767-400ER operated by United Airlines had a landing gear malfunction, but the aircraft was able to safely make an emergency landing.

The 767-400ER is unique in that it is one of the most advanced aircraft in the world. It has advanced avionics and navigation systems, as well as a significantly updated cabin interior. Furthermore, its engines are some of the most reliable and fuel-efficient engines in the world. All of these features make the 767-400ER one of the most popular aircraft in the world.