X
We usually call the airline what they call themselves and normally check it using their website
Air Arabia while they may have airarabia.com along the side of their aircraft actaully call themselves Air Arabia as can be seen the the about us page of their website
http://www.airarabia.com/crp_1/know-more We have to distinguish between the advertising name, their website details etc and use their real name
I agree its flydubai and have amended their name
For Qantas, I Aagree with the origin of the name but as can be seen from the about us page in their website
http://www.qantas.com.au/travel/airlines/history/global/en the named used is Qantas hence why we use it.
Again agreement that it should be TAROM and have changed the d/b
As for Varig, as far as I can establish following the integration of Vargis inTO Gol, Gol announced that the brand VARIG would continue doing business and operating as Varig rather than its official name VRG Linhas Aéreas.
Alan