This subpart prescribes rules of practice and procedure applicable to the conduct of investigative proceedings under section 7(j)(15) of the Federal Deposit Insurance Act, as amended, 12 U.S.C. 1817(j)(15) (``FDIA''), section 8(n) of the FDIA, 12 U.S.C. 1818(n), or section 10(c) of the FDIA, 12 U.S.C. 1820(c). This subpart does not apply to adjudicatory proceedings as to which hearings are required by statute, the rules for which are contained in subpart C.