>> thunderstorms in the united states, you wouldn't take off. you'd be on the ground at laguardia or kennedy. >> reporter: today, reports the doomed aerial's pilots may not have received intensive weather data prior to take-off. a top indonesian aviation official tells cnn it's a matter under investigation and insists the standard is for pilots to be briefed in advance on the weather. and concern airasia was not approved to fly the route from surabaya to singapore on the day it went missing, highlighting indonesia's significant safety problems with controlling its airspace. experts say booming air traffic has made indonesia the world's busiest airspace with the weakest safety infrastructure. >> indonesia would be on a watch list from an faa standpoint, one of ten nations where there are serious safety and regulatory oversight problems. >> reporter: indonesian officials are now investigating why flight 8501 was allowed to take off without the proper permission.