About the Boeing 737-400
The -400 is longer than the 737-300 and 737-500. Air North lists its -400 at about 120 feet (36.5 meters). The stretch gives passenger operators room for more rows or different cabin sections.
Seating capacity
Boeing shows 146 seats in a mixed-class layout and 159 or 168 seats in two economy layouts. Air North lists 156 economy seats. These figures describe particular cabin arrangements. Use the operating airline’s seat map to check the aircraft on your flight.
Cabin layout
In Boeing’s diagrams, regular economy rows have three seats on each side of the aisle. The example with 146 seats places eight First Class seats at the front and 138 Economy seats behind them. Boeing’s denser economy example has less space between rows. The -400SF uses the main deck for freight.
How to recognize a Boeing 737-400
In comparable side views, the fuselage looks longer than those of the -300 and -500. A large cargo door on the left side is a clue to an AEI -400SF conversion. Use the registration if the aircraft is too far away to see the details.
Variants and related aircraft
The FAA lists the 737-400 under B734, the shorter 737-300 under B733 and the 737-500 under B735. The -400SF is a freighter conversion of the -400. Passenger seat maps describe aircraft fitted with a passenger cabin.
Boeing 737-300 · Boeing 737-500
Frequently asked questions
Does every Boeing 737-400 have 156 seats?
Air North publishes 156 seats. Boeing illustrates layouts with other totals, so check the operating airline’s seat map.
What is a Boeing 737-400SF?
It is a 737-400 converted for cargo. The AEI version has a large cargo door and a main deck configured for freight.