http://www.askthepilot.com/safest-year-ever/

https://www.telegraph.co.uk/travel/comment/2017-was-the-safest-year-in-aviation-history/

https://www.independent.co.uk/travel/news-and-advice/air-safety-2017-best-year-safest-airline-passengers-worldwide-to70-civil-aviation-review-a8130796.html

https://news.aviation-safety.net/2017/12/30/preliminary-asn-data-show-2017-safest-year-aviation-history/

https://aviationvoice.com/2017-the-safest-year-for-aviation-in-history-2-201801021011/

https://flightsafety.org/2017-safest-year/

https://www.forbes.com/sites/niallmccarthy/2018/01/02/2017-was-the-safest-year-in-the-history-of-commercial-air-travel-infographic/#6ae39e4860d4

https://www.reuters.com/article/us-aviation-safety/2017-safest-year-on-record-for-commercial-passenger-air-travel-groups-idUSKBN1EQ17L

https://airlinegeeks.com/2018/01/01/2017-the-safest-year-for-aviation-in-history/