I know that this is a rumour network, but can one of the very few facts relevant here be made clear, BG47 and Jehrler?
62 Indonesian airlines are indeed banned from the EU airspace due to the failure of local regulatory oversight.
But 5 are approved. Presumably, that means that the EU finds their internal processes make up for the regulator's weakness.
And guess what? Indonesia Air Asia is one of those few Indonesian airlines approved by the European Union to fly to the EU if it chooses, along with Garuda (which does).
Because it meets EU standards.
Fact. Not rumour.
The links proving this are very early on in this thread, if our posters had read them rather than just smearing all low-cost airlines.