Thomas Hirschmann has resigned as chief executive of Jet Aviation after more than 29 years with the family-owned company. No reason has been given. Hirschmann is replaced in the interim by former chief operating officer Heinz Köhli.

The resignation is the latest in a number of management changes at the West Palm Beach, Florida-based business aviation service provider and its Swiss parent company Hirschmann Industrial Holding. Rita Hirschmann, widow of Jet Aviation founder Carl Hirschmann, has taken over from Moritz Suter as chairman of Hirschmann Industrial. The former Crossair regional airline founder was appointed to the post only last month.

Meanwhile, the company has expanded its European and US charter fleets, adding a Challenger 600, Gulfstream III and IV and two Hawker 700s to its fleet based at Dallas, Texas; a Challenger 601 to the Dulles, Virginia, fleet; a GIV at West Palm Beach, Florida; and a Dassault Falcon 900EX at Cologne, Germany.

Source: Flight International