Its rapid growth was a symbol of the booming airline sector across Southeast Asia. "The airline has said it would cooperate with the investigation but has not commented further on the allegation," Bengali and Pathoni wrote. "Indonesian officials say AirAsia was authorized to serve the Surabaya-to-Singapore route four days a week but not on Sundays." Indonesia's aviation sector underwent deregulation in the 1990s. However, the Los Angeles Times reported that the European Union imposed a temporary ban on Indonesian airlines entering its airspace due to accidents and safety concerns. In AirAsia's defense, Indonesian aviation consultant Gerry Soejatman told the Los Angeles Times that the airliner cannot be solely blamed because it flew the same route for two months before the crash. "This lapse puts more questions on our aviation sector than the crash itself," Soejatman said. "The government should have known about it. Had this accident not happened, the likelihood is the lapse might have continued."