Boeing 737 Convertible

The narrow-body convertible built for mixed passenger and cargo operations.

WestJet 737-700C ‘C-FIWJ’ © Johnnyw3

Overview

Boeing United States ICAO: B737 1998–Present Active $35 million (2008)

The Boeing 737 Convertible refers to combi and convertible variants of the 737 designed to switch between passenger and cargo roles. Developed to enhance operational flexibility, these versions served airlines requiring adaptable capacity. The concept has been applied across multiple 737 generations.

Live Fleet Activity (B737)

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Specifications

Units
Engine
2 × CFM 56-7B20/22/24/26
Engine type
Turbofan
Thrust
2 × 26,300 lbf · 117 kN
Avionics
Rockwell Collins avionics
Wing tips
No winglets
Seats
149 economy · 140 business
Crew
—
Cabin width
11 ft 7 in  ·  3.53 m
Cabin height
7 ft 3 in  ·  2.20 m
Cabin length
79 ft 2 in  ·  24.13 m
Exterior length
110 ft 4 in  ·  33.63 m
Tail height
41 ft 3 in  ·  12.57 m
Fuselage diameter
12 ft 4 in  ·  3.76 m
Wing span
112 ft 7 in  ·  34.32 m
Baggage volume
968 ft³  ·  27.4 m³
Gross weight
—
Empty weight
—
Max takeoff weight
154,500 lb  ·  70,000 kg
Max landing weight
129,000 lb  ·  58,500 kg
Max payload
38,700 lb  ·  17,600 kg
Fuel capacity
6,900 gal · 26,000 L · 20,800 kg (Jet A)
Max cruise speed
450 kt  ·  518 mph  ·  833 km/h
Maximum speed
—
Cruise speed
—
Approach speed
120 kt  ·  138 mph  ·  222 km/h
Range
3,445 nm  ·  3,960 mi  ·  6,380 km
Fuel burn
0.57 nm/gal  ·  0.28 km/L
Ceiling
41,000 ft  ·  12,500 m
Rate of climb
3,000 ft/min  ·  15 m/s
Takeoff distance
8,300 ft  ·  2,530 m
Landing distance
7,000 ft  ·  2,130 m
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WestJet Boeing 737-700 ‘C-FIWS’

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Operational Context

Boeing 737 Convertible — passenger-to-cargo adaptable jet

Convertible versions of the 737 were introduced to allow operators to reconfigure the cabin for freight service. Reinforced floors and large cargo doors enabled main deck cargo loading. These aircraft typically operated on short and medium-haul routes.

Performance characteristics generally match equivalent passenger variants, with cruise speeds near 460 knots (850 km/h). Maximum takeoff weight varies by model but can exceed 150,000 pounds (68,000 kg). Seating or cargo capacity depends on configuration.

The convertible concept has proven useful for airlines with fluctuating demand. It offers operational versatility without requiring separate fleets. Such variants continue to serve niche markets worldwide.