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DHC-6 Twin Otter vs DHC-7 Dash 7

DHC-6 Twin Otter vs DHC-7 Dash 7 at a glance — top speed 315 vs 451 km/h, range 1,480 vs 1,280 km, max takeoff weight 5,670 vs 19,958 kg, built 985 vs 113 units.

De Havilland Canada DHC-6 Twin Otter military transport aircraft side profile drawing
🇨🇦 DHC-6 Twin Otter
De Havilland Canada DHC-7 Dash 7 military transport aircraft side profile drawing
🇨🇦 DHC-7 Dash 7
Specifications
DHC-6 Twin Otter DHC-7 Dash 7
Origin country 🇨🇦 Canada 🇨🇦 Canada
Category Military Transport Aircraft Military Transport Aircraft
Manufacturer De Havilland Canada De Havilland Canada
First flight 20 May 1965 27 March 1975
Year introduced 1966 1978
Number produced 985 units 113 units
Average unit price $7 million $15 million
Wing area 39.0 m² 80.0 m²
Wingspan 20.0 m 28.0 m
Height 6.0 m 8.0 m
Length 15.8 m 23.6 m
Maximum speed 315 km/h 451 km/h
Operational range 1,480 km 1,280 km
Service ceiling 7,620 m 6,401 m
Max. takeoff weight 5,670 kg 19,958 kg
Empty weight 3,175 kg 12,542 kg
Total thrust 2 x 410 kW 4 x 835 kW
Performance Radar Chart
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Frequently Asked Questions

Which is faster, the DHC-6 Twin Otter or DHC-7 Dash 7?
The DHC-7 Dash 7 is faster with a maximum speed of 451 km/h compared to the DHC-6 Twin Otter's 315 km/h, a difference of 136 km/h.
Which has longer range, the DHC-6 Twin Otter or DHC-7 Dash 7?
The DHC-6 Twin Otter has a longer range at 1,480 km compared to the DHC-7 Dash 7's 1,280 km.
Which can fly higher, the DHC-6 Twin Otter or DHC-7 Dash 7?
The DHC-6 Twin Otter has a higher service ceiling at 7,620 meters (25,000 ft) compared to the DHC-7 Dash 7's 6,401 meters (21,000 ft).
Which is heavier, the DHC-6 Twin Otter or DHC-7 Dash 7?
The DHC-7 Dash 7 has a higher maximum takeoff weight at 19,958 kg compared to the DHC-6 Twin Otter's 5,670 kg.
Which is larger, the DHC-6 Twin Otter or DHC-7 Dash 7?
The DHC-7 Dash 7 is longer at 23.6 meters compared to the DHC-6 Twin Otter's 15.8 meters.
Which is more expensive, the DHC-6 Twin Otter or DHC-7 Dash 7?
The DHC-7 Dash 7 is more expensive at approximately $15 million per unit compared to the DHC-6 Twin Otter at $7.0 million.
Which entered service first, the DHC-6 Twin Otter or DHC-7 Dash 7?
The DHC-6 Twin Otter entered service first in 1966, 12 years before the DHC-7 Dash 7 which entered service in 1978.
Which has been built in greater numbers, the DHC-6 Twin Otter or DHC-7 Dash 7?
The DHC-6 Twin Otter has been produced in greater numbers with 985 units compared to 113 units of the DHC-7 Dash 7.