Analysis of information sources in references of the Wikipedia article "Virtual Air Traffic Simulation Network" in English language version.
Systems like VATSIM are apparently very strict experiences, however, with standards for training and currency that can be more intense and involved than some pilots want to undertake.
It formed in 2001 when internal politics in a precursor network, SATCO, caused a rupture that resulted in two rival networks: VatSim ... and IVAO
...is so realistic that some commercial airlines are starting to use it to train [their] pilots...
VATSIM is the largest network, with more than 110,000 registered members
There now exists a vibrant community organized around VATSIM, as well as remarkably complex and robust software supporting these activities.
It formed in 2001 when internal politics in a precursor network, SATCO, caused a rupture that resulted in two rival networks: VatSim ... and IVAO
...is so realistic that some commercial airlines are starting to use it to train [their] pilots...
Systems like VATSIM are apparently very strict experiences, however, with standards for training and currency that can be more intense and involved than some pilots want to undertake.