(Bloomberg) -- China’s HNA Aviation Group Co. agreed to buy a majority stake in SR Technics, a Swiss aircraft-maintenance service provider, from Mubadala Development Co. for an undisclosed amount.

The Abu Dhabi government-backed investment fund will sell 80 percent of SR Technics and retain the rest in a deal subject to regulatory approvals, the Zurich-based company said in a statement. SR Technics has 3,300 workers and services about 1,050 aircraft, according to its website.

The latest acquisition by the HNA Group, a Chinese airlines-to-supermarkets conglomerate based in Hainan, will add to a series of aviation assets it has been buying around the world as billionaire founder Chen Feng expands his empire beyond Hainan Airlines Co. The group is currently in the process of acquiring Gategroup Holding AG, a Swiss inflight caterer.

Mubadala was part of a group of three United Arab Emirates-based investors that bought control of SR Technics in 2006. In 2011, Mubadala became the sole owner of the company, which was spun off from the maintenance and engineering business of Swissair, the Swiss carrier.

Mubadala was set up in 2002 to help diversify the U.A.E. economy from fossil resources to industries including aerospace, real estate and financial services, with a portfolio of activities now valued at about $67.1 billion, according to its website.

--With assistance from Dinesh Nair To contact the reporter on this story: Crystal Tse in Hong Kong at To contact the editors responsible for this story: Fion Li at, Anand Krishnamoorthy at, Sam Nagarajan

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