In 1990 , the FCC approved Goeken 's plan to share the Airfone frequencies .
In 1990 , the FCC solicited applications for and subsequently issued licences to several companies to operate digital Terrestrial Aeronautical Public Correspondence ( TAPC ) services .
In 1990 , the FCC approved Goeken 's plan to share the Airfone frequencies , and solicited applications for and subsequently issued licences to several companies to operate digital Terrestrial Aeronautical Public Correspondence ( TAPC ) services .