767400ER

The Boeing 767-400ER is a wide-body twinjet airliner developed by Boeing. It is the longest variant of the 767 family, derived from the 767-300ER with a stretched fuselage and improved takeoff weight to deliver higher capacity and longer-range capabilities for intercontinental routes. It first flew in 1999 and entered service in 2000, with Northwest Airlines acting as the launch customer.

Design and capabilities: The 767-400ER features a lengthened fuselage compared with the 767-300ER, enabling a larger passenger cabin across typical three-class layouts. The airframe incorporates an increased maximum takeoff weight and, in some configurations, an additional center fuel tank to extend range. It uses the same family of engines as other 767 variants, with options including GE CF6-80C2 or Pratt & Whitney PW4000, depending on the customer. Aerodynamically, the aircraft retains the 767’s twin-aisle profile while incorporating updated systems and avionics to support its longer range. Typical seating configurations range from roughly 240 to 270 passengers, depending on airline layout.

Operational history: The 767-400ER was produced in a relatively limited run and served primarily with major North American carriers on long-haul routes. After entering service, it complemented other 767 variants by offering higher capacity on intercontinental missions. Over time, fleets shifted toward newer aircraft, but the -400ER remained in service with select operators for many years.

See also: Boeing 767 family.