Sec.  1.254   Nature of the hearing; burden of proof.

   Any  hearing  upon an application shall be a full hearing in which the
   applicant  and  all  other  parties  in interest shall be permitted to
   participate but in which both the burden of proceeding with the introduction
   of evidence upon any issue specified by the Commission, as well as the
   burden of proof upon all such issues, shall be upon the applicant except as
   otherwise provided in the order of designation.

   (Sec. 309, 48 Stat. 1085, as amended; 47 U.S.C. 309)