Some aircraft have a propeller synchrophaser to reduce cabin noise and vibration. On later models cruise power was limited to 75% to reduce cabin noise. Ĭessna 401s and 402s are powered by 300 hp (224 kW) turbocharged Continental engines with three-bladed, constant speed, fully feathering propellers.
Another goal was to avoid using the somewhat expensive and maintenance prone geared engines of the Cessna 411. One goal for the Cessna 401/402 was to improve upon the very bad single engine handling of the Cessna 411. The Cessna 401 and 402 were developments of the Cessna 411. Their goal was to be a workhorse, useful to cargo and small commuter airlines among other users.
The Cessna 401 and 402 were developed to be non-pressurized twin engine piston aircraft.
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