The Boeing 767-400 is the largest variant of the 767 family, designed to offer greater capacity, enhanced comfort, and improved performance over the 767-300. First entering service in 2000, the 767-400 features a significantly extended fuselage and upgraded wing design, which increases its capacity and efficiency on longer flights. The 767-400 was primarily developed to meet the needs of airlines requiring higher capacity on international routes, especially those operating transatlantic and transpacific flights.

Although it shares many design features with the 767-300, the 767-400 offers more seating and improved aerodynamics, making it more fuel-efficient. The 767-400 is used primarily by U.S. carriers for long-haul routes but has also seen use in cargo and charter services.

Key Specifications (767-400)

• Crew: 2 (Pilots).
• Capacity: Typically 245–296 passengers, depending on configuration.
• Length: 63.73 m (209 ft 1 in).
• Wingspan: 51.71 m (169 ft 4 in).
• Height: 16.83 m (55 ft 3 in).
• Max Takeoff Weight (MTOW): 204,000 kg (450,000 lb).
• Engines: 2 × General Electric CF6-80C2, Pratt & Whitney PW4000, or Rolls-Royce RB211 turbofans.
• Cruise Speed: Mach 0.80 (~850 km/h or 528 mph).
• Range: ~6,150 km (3,815 mi).
• Ceiling: 41,000 ft (12,500 m).

Notable Features

• Extended Fuselage: The 767-400 has a longer fuselage than the 767-300, allowing for greater passenger capacity and providing more options for seating configurations.
• Wider Wingspan: The wing design of the 767-400 was also improved over the 767-300, allowing for better fuel efficiency and more efficient aerodynamics, particularly on long-haul flights.
• Modern Cockpit and Avionics: The 767-400 features updated cockpit systems that improve the pilot's workload and reduce maintenance needs, in line with modern aviation standards.
• Comfortable Cabin: The 767-400 was designed with passenger comfort in mind, offering a more spacious cabin than its predecessors, including larger overhead bins and more room in the economy class cabin.

Variants

• 767-400ER: The extended-range version of the 767-400, designed for longer flights with a greater fuel capacity, suitable for international and transcontinental routes.
• 767-400BCF: The converted freighter version of the 767-400, popular with air cargo operators due to its increased capacity and cargo hold space.

Operators & Usage

• Passenger Operations: The 767-400 has been primarily used by U.S. carriers such as Delta Air Lines, United Airlines, and American Airlines for international flights, including routes to Europe, Asia, and the Middle East.
• Cargo Operations: Some 767-400 models have been converted to freighters, particularly by cargo operators like FedEx, who value the aircraft's large cargo hold and long-range capabilities.
• Retirement & Replacement: As more modern aircraft like the Boeing 787 and Airbus A350 enter service, some airlines are gradually replacing their 767-400 fleets, but the aircraft remains a reliable workhorse for long-haul routes.