The evidence submitted by the parties, together with all papers and requests filed in the proceeding and any transcripts, shall constitute the exclusive record for decision. Where any decision rests on official notice of a material fact not appearing in the record, any party shall on timely request be afforded an opportunity to show the contrary.
47 C.F.R. §1.203
5 U.S.C. 556 ; 47 U.S.C. 154, 159, 208, 209, 214, 309, 312, 316, and 409
5 U.S.C. 556 ; 47 U.S.C. 154 , 159 , 208 , 209 , 214 , 309 , 312 , 316 , and 409