Boeing 737-400 vs. Bombardier CRJ-700

The Boeing 737-400, part of the 737 Classic series, is a narrow-body, twin-engine airliner developed to meet the evolving requirements of the short to medium-haul market. First introduced in 1988, the 737-400 expanded upon the success of its predecessor, the 737-300. The -400 variant entered manufacturing shortly after finalization of design plans between Boeing and launch customer Piedmont Airlines (later merged into US Airways). It gives increased capacity and range, offering an option in between Boeing's 737-300 and the 757-200.

The fuselage incorporated a key 8 foot expansion to enable typical accommodation for up to 170 passengers in a 2-class layout. Other changes included increased weights and structural reinforcements, enhanced avionics/flight controls, and higher thrust CFM powerplants required for the heavier max takeoff figures. Cost efficiencies were achieved keeping cockpit continuity with the ubiquitous 737 flight deck suite.

Spanning 119.6 feet (36.5 meters) in length with a wingspan of 94.5 feet (28.8 meters), the 737-400 was designed to accommodate the growing demand for larger single-aisle aircraft. The aircraft typically seats 144 passengers, providing more space and comfort compared to earlier models in the series. This increased capacity made the 737-400 an attractive option for airlines seeking to transport more passengers on popular routes, without the need for a larger, wide-body aircraft. Equipped with two CFM International CFM56-3C1 engines, the 737-400 delivers a total thrust of 44,000 lbf (196.0 kN). This engine configuration, combined with a fuel capacity of 5,310 US gallons (20,100 liters), allows the aircraft to achieve a range of 2,079 nautical miles (3,850 kilometers).

In the competitive commercial aviation market of its time, the Boeing 737-400 contended with models like the McDonnell Douglas MD-80 series. Its introduction marked another milestone for Boeing in the evolution of the 737 family, solidifying the company's position in the market for short to medium-haul airliners. Airlines such as Alaska Airlines, Turkish Airlines, and British Airways incorporated the Boeing 737-400 into their fleets. The aircraft's operational role was significant, enabling these carriers to expand their route networks and increase flight frequencies, particularly in domestic and regional markets.

The Bombardier CRJ-700 is a narrow-body regional aircraft, designed for short to medium-haul routes. Introduced in 1999 as a member of the Canadair Regional Jet series, the CRJ-700 is a stretched derivative of the CRJ200. Regional carriers use CRJs, like the -700, to serve smaller cities and transport passengers to hub airports for connecting flights.

The CRJ-700 is approximately 32 meters (106.0 feet) long, and 23.3 meters (76.4 feet) from wing tip to wing tip. This aircraft is tailored for operations in smaller airport environments with limited runway lengths. The size and design of the CRJ-700 facilitate efficient airport operations and quick turnarounds, essential for the high-frequency schedules typical of regional airlines. Powered by General Electric engines capable of delivering a maximum thrust of 122.6 kN (27,600 lbf), the CRJ-700 is equipped for a range of approximately 2,593 kilometers (1,400 nautical miles). This range allows airlines to deploy the aircraft on a wide array of routes, from short hops to longer regional journeys, without sacrificing efficiency or performance. CRJ-700 flights can typically range anywhere from 30 minutes to a couple hours in duration.

The cabin of the CRJ-700 is designed to seat around 66-78 passengers in a standard single-class configuration. Features such as improved cabin lighting, ergonomic seating, and overhead storage contribute to an enhanced passenger experience. Additionally, the cabin's design allows for quick and efficient boarding and deplaning, a key consideration in regional air travel.

In the competitive landscape of regional aircraft, the Bombardier CRJ-700 holds its ground against counterparts like the Embraer E175. The CRJ-700's introduction served to address a growing market demand for regional jets that could offer better performance, more seats, and improved passenger comfort compared to earlier models. US-based airlines including American Eagle, Delta Connection, and United Express have utilized the CRJ-700 extensively. Its operational strengths make it well-suited for building and maintaining effective regional networks, providing vital connectivity between smaller cities and major airports. The aircraft's role extends beyond just transportation; it facilitates economic growth and accessibility to remote areas, proving to be a valuable asset in the regional aviation sector. At launch, the -700 had an estimated sale price of $35 million. Production for the entire CRJ family was discontinued after 2021.