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Dash 8-400 recertified to earn world-first noise standard
September 4, 2020 By Wings Staff
The Dash 8-400 has transported more than 400 million passengers worldwide. (Image: De Havilland Aircraft) De Havilland Aircraft of Canada has recertified its Dash 8-400 turboprop aircraft to meet the newest, most-stringent noise emission standards set out by ICAO Chapter 14. This achievement makes the Dash 8-400 the first propeller-driven aircraft, and also the first regional aircraft in the world, to achieve the certification.
De Havilland explains ICAO Chapter 14 – equivalent to FAA Stage 5 – takes effect after December 31, 2020, for all new subsonic jet and propeller-driven aircraft. As a result of its new Dash 8-400 certification, De Havilland explains operators will have no need to re-fleet or re-engine in order to meet ICAO Chapter 14 requirements.
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The Dash 8-400 take-off noise footprint (blue), relative to ICAO Chapter 14 (green) and Chapter 4 (red) noise limits at Billy Bishop Toronto Airport, YTZ. (Image: De Havilland Canada).
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The Dash 8-400 take-off noise footprint at London City Airport, LCY, in the UK. (Image: De Havilland Canada).
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The Dash 8-400 take-off noise footprint at Sydney International Airport, SYD, in New South Wales, Australia. (Image: De Havilland Canada).
“The achievement of this recertification is a testament to the Dash 8-400 aircraft’s low community noise footprint during take-off and landing,” said Robert Mobilio, VP, engineering and quality, De Havilland Canada. “We have proactively recertified to the latest, more stringent standards in order to provide maximum benefits to our operating fleet.”
Comprised of 600 aircraft, the global Dash-8 400 fleet, explains Mobilio, will also have the ability to access noise-sensitive airports with fewer limitations and lower noise-related charges.
The Dash 8-400 features what De Havilland describes as quiet, swept, six-bladed Dowty propellers on Pratt & Whitney Canada PW150A engines. The Dash 8-400 is also engineered with a newly improved, proprietary Active Noise and Vibration Suppression (ANVS) system that effectively reduces the propeller noise level inside the aircraft for cabin comfort.
