The Continental Express DH8D that crashed thursday night was the first model in the world to use a new technology to dampen cabin noise with active vibrators mounted on the frame. The Bombardier Q400 (Q stands for quiet) is the world's first application of NVS in an airliner cabin. The NVS system uses a special on-board computer that receives signals from microphones throughout the cabin and propeller speed to control devices called Active Tuned Vibration Absorbers (ATVAs). These ATVA units are mounted on the fuselage frame and produce out-of-phase counter vibrations which reduce the normal noise produced by the propellers. Could this be a factor is the crash? It would be prudent for the NTSB and FAA to immediately ground all Q400 aircraft.
Could New Technology have caused crash?
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