Embraer chairman Mauricio Botelho has resigned and vice chairman Hermann Wever has been appointed the position on an interim basis.

Embraer said in a statement that Botelho had stepped down "for personal reasons."

Botelho was the Brazilian manufacture’s president and CEO from 1995 to 2007 and became chairman in 2006. He led the company’s restructuring after its privatization and built and established a successful family of regional jets that made Embraer the world’s fourth largest commercial aircraft manufacturer.

“On behalf of all of the people who make up the Embraer family, we present our sincere gratitude to Mauricio for his dedication and effective contribution to the success of our company, wishing him much success and happiness in this new phase of his life,” the company said in its statement.

The statement also said that an extraordinary general assembly to elect a new chairman will be called in the near future.

Wever began his career with the industrial unit of General Electric and is a former president of Siemens’ energy sector. He was elected to the Embraer board of directors in March 2006.