Sec. 101.309  Requirement that licensees respond to official 
          communications.

    All licensees in these services are required to respond to official 
communications from the Commission with reasonable dispatch and 
according to the tenor of such communications. Failure to do so will be 
given appropriate consideration in connection with any subsequent 
applications which the offending party may file and may result in the 
designation of such applications for hearing, or in appropriate cases, 
the institution of proceedings looking to the modification or revocation 
of the pertinent authorizations.