Tijuana-based Avolar, which has gone through three chief executives in recent months, has so far fought off the grounding order but is battling to stay in business with rival Volaris having added capacity on some of its routes. "I think Avolar will disappear," says Volaris chief executive Enrique Beltranena. Accelerated Growth Volaris, which has also been quickly adding capacity at Aerocalifornia's base in La Paz, is accelerating its fleet expansion plan to take advantage of the changes in the marketplace. ­Beltranena says Volaris will add seven Airbus A319s next year instead of an original plan for one. It now operates 18 A319s with one more A319 and two A320s due for delivery this year. Volaris has already become Mexico's largest low-cost carrier and Beltranena claims by year-end it will also surpass ­Aeromexico and Mexicana as the country's largest domestic player.