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DHC-6 Twin Otter vs PA-34 Seneca

DHC-6 Twin Otter vs PA-34 Seneca at a glance — top speed 315 vs 378 km/h, range 1,480 vs 1,611 km, max takeoff weight 5,670 vs 2,155 kg, built 985 vs 5,037 units.

De Havilland Canada DHC-6 Twin Otter military transport aircraft side profile drawing
🇨🇦 DHC-6 Twin Otter
Piper PA-34 Seneca military transport aircraft side profile drawing
🇺🇸 PA-34 Seneca
Specifications
DHC-6 Twin Otter PA-34 Seneca
Origin country 🇨🇦 Canada 🇺🇸 United States
Category Military Transport Aircraft Military Transport Aircraft
Manufacturer De Havilland Canada Piper
First flight 20 May 1965 25 April 1967
Year introduced 1966 1971
Number produced 985 units 5037 units
Average unit price $7 million --
Wing area 39.0 m² 19.4 m²
Wingspan 20.0 m 11.9 m
Height 6.0 m 3.0 m
Length 15.8 m 8.7 m
Maximum speed 315 km/h 378 km/h
Operational range 1,480 km 1,611 km
Service ceiling 7,620 m 7,620 m
Max. takeoff weight 5,670 kg 2,155 kg
Empty weight 3,175 kg 1,457 kg
Total thrust 2 x 410 kW 2 x 164 kW
Performance Radar Chart
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Frequently Asked Questions

Which is faster, the DHC-6 Twin Otter or PA-34 Seneca?
The PA-34 Seneca is faster with a maximum speed of 378 km/h compared to the DHC-6 Twin Otter's 315 km/h, a difference of 63 km/h.
Which has longer range, the DHC-6 Twin Otter or PA-34 Seneca?
The PA-34 Seneca has a longer range at 1,611 km compared to the DHC-6 Twin Otter's 1,480 km.
Which can fly higher, the DHC-6 Twin Otter or PA-34 Seneca?
The PA-34 Seneca has a higher service ceiling at 7,620 meters (25,000 ft) compared to the DHC-6 Twin Otter's 7,620 meters (25,000 ft).
Which is heavier, the DHC-6 Twin Otter or PA-34 Seneca?
The DHC-6 Twin Otter has a higher maximum takeoff weight at 5,670 kg compared to the PA-34 Seneca's 2,155 kg.
Which is larger, the DHC-6 Twin Otter or PA-34 Seneca?
The DHC-6 Twin Otter is longer at 15.8 meters compared to the PA-34 Seneca's 8.7 meters.
Which entered service first, the DHC-6 Twin Otter or PA-34 Seneca?
The DHC-6 Twin Otter entered service first in 1966, 5 years before the PA-34 Seneca which entered service in 1971.
Which has been built in greater numbers, the DHC-6 Twin Otter or PA-34 Seneca?
The PA-34 Seneca has been produced in greater numbers with 5,037 units compared to 985 units of the DHC-6 Twin Otter.