DHC-6 Twin Otter vs DHC-7 Dash 7

Overview

The DHC-6 Twin Otter and the DHC-7 Dash 7 are both Military Transport Aircraft, manufactured by De Havilland Canada and De Havilland Canada respectively.

Top speed is 315 km/h for the DHC-6 Twin Otter vs 451 km/h for the DHC-7 Dash 7. The DHC-6 Twin Otter has an operational range of 1,480 km vs 1,280 km for the DHC-7 Dash 7. The DHC-6 Twin Otter operates at altitudes up to 7,620 m compared to 6,401 m for the DHC-7 Dash 7. At 19,958 kg MTOW, the DHC-7 Dash 7 is 3.5x the DHC-6 Twin Otter's 5,670 kg.

The DHC-6 Twin Otter has been produced in 985 units vs 113 for the DHC-7 Dash 7. Unit cost is $7M for the DHC-6 Twin Otter vs $15M for the DHC-7 Dash 7. The DHC-6 Twin Otter first flew 10 years before the DHC-7 Dash 7 (1965 vs 1975).

DHC-6 Twin Otter

Canadian utility aircraft, vital in civil and military operations worldwide since the 1960s, famous for its STOL capabilities.
De Havilland Canada DHC-6 Twin Otter Transport profile drawing
Origin country 🇨🇦 Canada
Category Military Transport Aircraft
Manufacturer De Havilland Canada
First flight 20 May 1965
Year introduced 1966
Number produced 985 units
Average unit price $7 million
→ View full DHC-6 Twin Otter details

DHC-7 Dash 7

Canadian regional airliner, dominant in the 1980s, known for its STOL capabilities and extensive usage in challenging terrains.
De Havilland Canada DHC-7 Dash 7 Transport profile drawing
Origin country 🇨🇦 Canada
Category Military Transport Aircraft
Manufacturer De Havilland Canada
First flight 27 March 1975
Year introduced 1978
Number produced 113 units
Average unit price $15 million
→ View full DHC-7 Dash 7 details

DHC-6 Twin Otter

Wing area 39.0 m² ◉
Wingspan 20.0 m â—‰
Height 6.0 m â—‰
Length 15.8 m â—‰
Maximum speed 315 km/h â—‰
Operational range 1,480 km â—‰
Service ceiling 7,620 m â—‰
Max. takeoff weight 5,670 kg â—‰
Empty weight 3,175 kg â—‰
Total thrust 2 x 205 kW â—‰

DHC-7 Dash 7

Wing area 80.0 m² ◉
Wingspan 28.0 m â—‰
Height 8.0 m â—‰
Length 23.6 m â—‰
Maximum speed 451 km/h â—‰
Operational range 1,280 km â—‰
Service ceiling 6,401 m â—‰
Max. takeoff weight 19,958 kg â—‰
Empty weight 12,542 kg â—‰
Total thrust 4 x 209 kW â—‰

Performance Radar Chart

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.

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