Boeing 737-400 vs. Embraer E170

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 Embraer E170, introduced in 2002, is a narrow-body regional jet, and the smallest variant in the Embraer E-Jet family. This aircraft was developed to address the needs of regional airlines for a modern, efficient jet that could operate on short to medium-haul routes with improved economic performance and passenger comfort. The E170 was the first E-Jet to enter revenue service in March 2004. Production was halted in 2017, and there are currently no plans for a newer variant in the E2 generation.

With a length of 29.9 meters (98.1 feet) and a wingspan of 26.0 meters (85.3 feet), the E170 is designed to be agile and efficient in various airport environments, including smaller regional and city airports. With a height of 2.9 meters (9.5 feet), the cabin of the E170 is roomy enough to comfortably stand in the aisle. Powered by General Electric CF34-8Es, the E170 boasts 63.0 kN (14,200 lbf) of thrust per engine. The aircraft has a range of 3,982 kilometers (2,150 nautical miles), making it well-suited for a variety of regional routes. The E170's range and fuel efficiency make it a compelling option for airlines looking to serve regional networks with a cost-effective jet.

The cabin of the E170 is designed to seat around 72 passengers in a standard configuration, with a high-density option allowing for up to 78 passengers. The interior of the E170 is focused on passenger comfort, featuring spacious seating, larger windows, and advanced in-flight entertainment systems. The aircraft's cabin design is also conducive to quick boarding and disembarking, a key factor in maintaining efficient operations on regional routes.

In the regional jet market, the Embraer E170 competes with aircraft such as the Bombardier CRJ-700, Airbus A220, and Bombardier Q400. Its introduction was in line with a growing trend towards regional jets that offer jetliner amenities and performance, combined with the economics and flexibility required for regional airline operations. Airlines that operate the Embraer E170 include LOT Polish Airlines, Republic Airways, and S7 Airlines. These carriers utilize the E170's capabilities to serve a mix of short and medium-range routes, leveraging its efficiency, range, and passenger appeal. The aircraft's operational profile allows these airlines to effectively connect smaller cities with major hubs and offer comfortable travel experiences on regional routes.

In summary, the Embraer E170's introduction into the regional aviation sector provided airlines with an aircraft that aligns well with the operational requirements of regional routes. Its design, passenger capacity, and range capabilities make it a notable choice for airlines looking to enhance their regional operations with an efficient, modern jet.