Boeing 737-600 vs. Boeing 737 MAX 8

Launched in 1998, the Boeing 737-600 is the smallest aircraft in the 737 Next Generation (NG) series. It succeeded the 737-500, and was a significant evolution in Boeing's narrow-body offerings. It featured many upgraded features from the previous 737s, including aerodynamics, engines, and avionics. As the smallest NG variant, the 737-600 was designed for efficiency and adaptability, catering to airlines requiring a compact jet for short to medium-haul routes.

This aircraft extends 102.4 feet (31.2 meters) in length with a wingspan of 112.6 feet (34.3 meters). The 737-600, with a typical seating capacity for 123 passengers, offers an ideal balance between passenger comfort and efficiency, making it a fitting choice for airlines serving routes with moderate passenger demand. Equipped with two CFM International CFM56-7B20 engines, the 737-600 has a total thrust of 45,400 lbf (202.0 kN). This engine power, coupled with a fuel capacity of 6,868 US gallons (26,000 liters), gives the -600 a range of 3,051 nautical miles (5,650 kilometers). The 737-600 has a cruise speed of 528 mph (850 km/h) enabling airlines to maintain efficient and swift operations, particularly beneficial for regional network connections.

In the late 1990s and early 2000s, the Boeing 737-600 competed with aircraft such as the Airbus A318 and Bombardier CRJ series, offering airlines a modern alternative in the narrow-body market. Airlines including Scandinavian Airlines (SAS), Westjet, and Air Algerie operated the Boeing 737-600. Ultimately, the -600 variant was not a popular model of the 737 due to its economics. The -700, only slightly heavier, had a much greater payload. Additionally, the larger market was moving more towards higher capacity narrow-bodies with lower unit costs and greater revenue opportunities.

The Boeing 737 MAX 8 is a narrow-body, twin-jet aircraft, and the upgraded version of the Boeing 737-800 from the NG family. As of 2023, over 1100 737 MAX jets are in service, with the majority of them being MAX 8s. The very first MAX 8 was delivered to Malindo Air in May of 2017. The state-of-the-art jet offers airlines a modern and versatile option for short to medium-haul routes.

A 20-month grounding interrupted deliveries after two fatal crashes traced to the programming of the Maneuvering Characteristics Augmentation System (MCAS). Now restored with multiple software fixes and training revisions, the 737 MAX series retains strong market demand for economical medium haul flight connectivity globally.

With a length of 129.7 feet (39.5 meters) and a wingspan of 117.8 feet (35.9 meters), the 737 MAX 8 is adept at accommodating the operational needs of both large international airports and smaller regional terminals. It is designed to seat up to 178 passengers, striking a balance between capacity and passenger comfort. The aircraft is powered by two CFM International LEAP-1B engines, each capable of producing 29,300 lbf of thrust (130.0 kN), totaling 58,600 lbf (260.0 kN). This power, combined with a fuel capacity of 6,816 US gallons (25,800 liters), enables the 737 MAX 8 to cover a range of 3,548 nautical miles (6,570 kilometers). The upgraded LEAP-1B turbofans contribute 20% fuel savings thanks to lighter composite designs. Re-engineered tail sections and wing tips further boost efficiency.

The 737 MAX 8 is rivaled by the Airbus A320neo. These two are arguably the most capable and efficient airliners for the modern medium haul market. The airlines with the most MAX 8s include Southwest Airlines, American Airlines, United Airlines. Other carriers include Flydubai, Aeromexico, Air Canada, and TUI Group. With future rate increases slated as demand persists, the MAX 8 remains well-positioned as sub 180-seat workhorse growing the 737 legacy.