NHS was formed in late 2009 providing Norwegian offshore services within the North Sea area.
Part of Avincis Group and in 2014 bought by Babcock International. In 2015 HNZ Group bought 49.9%.
Operations ceased on June 30, 2017.
Jun 1, 2015 · The international provider of helicopter services HNZ Group announced investment in Norsk Helikopterservice AS (NHS) an offshore helicopter provider based in Stavanger, Norway.
Feb 7, 2013 · Avincis received first of 16 new Sikorsky S-92. The order, placed in December 2011, is the largest single purchase of S-92s ever made. Will go to Norwegian NHS