India\'s private carrier Jet Airways said Friday that its chief executive Nikos Kardassis has resigned from the firm. \"Nikos Kardassis has resigned with effect from June 5,\" the airline said in a statement to the stock exchanges, without disclosing the reason. The carrier\'s chief operating officer Hameed Ali will be the \"acting CEO\", until a replacement for Kardassis is appointed. The airline thanked Kardassis for his \"significant contributions\" to the airline over a period of five years, the statement said. Jet Airways in April approved a landmark deal through which Abu Dhabi-based Etihad will pick up a 24 percent stake in the Indian airline. Etihad is reportedly keen for a change in Jet\'s management. On the newly revamped Jet Airways board, the Indian carrier will have four members and the Gulf carrier three members, including the CEO. The Jet-Etihad deal is the first overseas investment in an existing Indian carrier since the government eased restrictions in September to allow foreign firms a 49 percent stake in domestic airline companies. Jet is India\'s second-largest airline, with a 22.6 percent market share, according to the country\'s civil aviation regulator. Last month, Jet reported a quarterly net loss of 4.96 billion rupees ($90 million) in the three months to March, against a loss of 2.98 billion rupees a year earlier, after being hit by rising costs.