Sec.  73.3511   Applications required.

   (a) Formal application means any request for authorization where an FCC form
   for such request is prescribed. The prescription of an FCC form includes the
   requirement that the proper edition of the form is used. Formal applications
   on obsolete forms are subject to the provisions of  Sec. 73.3564 concerning
   acceptance of applications and  Sec. 73.3566 concerning defective applications.

   (b) Informal application1 means all other written requests for
   authorization. All such applications should contain a caption clearly
   indicating the nature of the request submitted therein.

   (c) Formal and informal applications must comply with the requirements as to
   signing specified herein and in  Sec. 73.3513.

   [ 44 FR 38486 , July 2, 1979, as amended at  47 FR 40172 , Sept. 13, 1982]