The Boeing 737-300 marked the beginning of the 737 "Classic" series, which included the -300, -400, and -500 models. Introduced in 1984, the 737-300 featured several improvements over the original 737-100 and -200, including increased capacity, updated avionics, and more fuel-efficient engines. It was designed to compete with the Airbus A320 and to meet the needs of airlines looking for a modern short-to-medium haul jet with better performance and economics.

A key innovation on the 737-300 was the use of CFM56 high-bypass turbofan engines, which offered significant fuel and noise improvements over the JT8D engines of earlier variants. This model became widely popular among carriers around the globe and played a major role in modernizing short-haul fleets during the 1980s and 1990s.

Key Specifications (737-300)

• Crew: 2 (Pilots).
• Capacity: Typically 126–149 passengers.
• Length: 33.40 m (109 ft 7 in).
• Wingspan: 28.88 m (94 ft 9 in).
• Height: 11.13 m (36 ft 6 in).
• Max Takeoff Weight (MTOW): ~62,820 kg (138,500 lb).
• Engines: 2 × CFM International CFM56-3B turbofans.
• Cruise Speed: Mach 0.74 (~795 km/h or 493 mph).
• Range: ~3,800 km (2,360 mi).
• Ceiling: ~37,000 ft (11,300 m).

Notable Features

• CFM56 engines with flatter nacelles to maintain ground clearance—sometimes nicknamed “hamster pouches.”
• Glass cockpit options available in later models, improving situational awareness.
• Improved cabin layout, insulation, and lighting over earlier 737 variants.
• Wider operational range, making it ideal for domestic and short international flights.
• Extensive aftermarket support and cargo conversions have extended its service life.

Operators & Usage

• Operated by numerous major carriers, including Southwest Airlines, US Airways, United, Lufthansa, and British Airways.
• One of the best-selling airliners of its time, with over 1,100 units produced.
• Many aircraft later converted into freighters (737-300F) for use by companies like DHL, TNT, and Swiftair.
• Some units still in service today with charter, low-cost, and cargo operators.