scope of § 332(c)(3); and that any entry or rate regulation of its service offering by a state or local government was ineffective. 48 Fed.Reg. 34,804 (1983). The Commission ordered its Secretary to cause a copy of the ruling to be published in the Federal Register “to provide guidance to the public and to state and local regulatory authorities.” Id. at 34,806.
Southern, Radiofone, and several other companies that had filed comments with the FCC filed petitions for review of the FCC’s ruling in this court under 47 U.S.C. § 402(a).2 A company, and a trade association of companies, engaged in business similar to that of Auto Page (but not Auto Page itself) intervened on behalf of the Commission. After oral argument had been heard, we were advised that Southern had purchased all of the equipment of Bela Communications, Inc., of which Auto Page was a wholly-owned subsidiary, and that Auto Page had ceased doing business. The FCC suggested that the cases before us had become moot. Petitioners opposed the suggestion.
II
All members of the court are in agreement that this case is moot and that we must vacate the agency’s order pursuant to United States v. Munsingwear, Inc., 340 U.S. 36, 71 S.Ct. 104, 95 L.Ed. 36 (1950), and A.L. Mechling Barge Lines, Inc. v. United States, 368 U.S. 324, 329, 82 S.Ct. 337, 340, 7 L.Ed.2d 317 (1961). See Tennessee Gas Pipeline Co. v. FPC, 606 F.2d 1373, 1380-83 (D.C.Cir.1979). It seems to the writer of this opinion, however, that some further analysis is called for. That is set forth in Part III below, which Judges Wright and Edwards do not join.
Ill
Federal courts will not hear a case unless it poses “a present, live controversy of the kind that must exist if [a court is] to avoid advisory opinions on abstract propositions of law.” Hall v. Beals, 396 U.S. 45, 48, 90 S.Ct. 200, 201, 24 L.Ed.2d 214 (1969). Petitioners maintain that qualification is met “because the FCC decision at issue ... has practical and legal impact on Petitioners/ Appellants, as well as on Intervenors. The legal consequences of the Declaratory Ruling have not disappeared.” Petitioners’ Statement of Controversy at 1. The practical and legal impact to which petitioners allude is the effect upon their behavior (and the behavior of their competitors) of the interpretation of law adopted by the Commission regarding the meaning of “interconnection.” That would indeed suffice to support this suit if the interpretation had been adopted as a rule — addressed, so to speak, to the world at large. All persons adversely affected by that rule would have standing to challenge its compliance with legal prescriptions designed for their protection. See 5 U.S.C. § 702 (1982); Association of Data Processing Service Organizations, Inc. v. Camp, 397 U.S. 150, 90 S.Ct. 827, 25 L.Ed.2d 184 (1970). The situation is different, however, when an interpretation of a statute, or some other legal principle, is set forth as the rationale of an adjudication. No one would contend that a person affected by no more than the precedential effect of a district court decision would have standing to appeal that decision here. Standing to challenge agency adjudications is of course more expan
2
47 U.S.C. § 402(a) authorizes petitions for review, in the manner prescribed in chapter 158 of Title 28 of the United States Code, of all orders of the Commission pertaining to wire or radio communication except those appealable under 47 U.S.C. § 402(b). We have jurisdiction over such petitions under' 28 U.S.C. § 2342 (1982), and venue lies in this court or in the Court of Appeals for the judicial circuit in which petitioner resides or has his principal place of business, 28 U.S.C. § 2343. Each of the present petitioners also filed a separate "appeal” under 47 U.S.C. § 402(b), which provides for review of certain categories of Commission orders pertaining to wire or radio communications only in this court. The order here at issue is not remotely within any of those categories. We can find no conceivable basis for the invocation of § 402(b), except the fact that it is recited as an exception to § 402(a). While protective filings by careful counsel are understandable, they should not be carried to the point of utter surplusage. On our own motion, we dismiss the § 402(b) appeals.