USA adopts ICAO Chapter 14 noise stringency standard for new aircraft designs

The Federal Aviation Administration (FAA) has passed a rule that requires newly designed aircraft to harmonise with the ICAO Chapter 14 noise standard that came into effect in July 2014. In keeping with FAA numbering of aircraft noise standards, the new standard will be adopted as Stage 5 in the US. The agency believes the standard will ensure that the latest available noise reduction technology is incorporated into new aircraft designs. It represents an increase in stringency of 7 EPNdB relative the previous ICAO Chapter 4 standard, or Stage 4. It will apply to new larger aircraft type designs with a maximum certificated take-off weight (MTOW) of 55 tonnes submitted for certification on or after 31 December 2017. For smaller aircraft with a MTOW of less than 55 tonnes, the standard will apply on or after 31 December 2020. The standard was passed into European Union law in January 2016.

http://www.greenaironline.com/news.php?viewStory=2420