12 CFR 303.43: Processing.

(a) Expedited processing for branch establishments. Filings to establish a branch by an eligible depository institution as defined in § 303.2(r) will be acknowledged in writing by the FDIC and will receive expedited processing if the depository institution is not currently subject to sanctions under § 369.5 of this chapter. A filing processed under expedited processing will be deemed approved on the later of the following:

(1) The third business day after receipt by the FDIC of a letter filing that includes the information set forth in § 303.42; or

(2) In the case of a filing to establish and operate a de novo interstate branch, the 5th day after the FDIC receives confirmation from the host State that the bank has both complied with the filing requirements of the host State and submitted a copy of its filing with the FDIC to the host State bank supervisor.

(b) Expedited processing for branch relocations and main office relocations. Filings for intrastate branch relocations or intrastate main office relocations will be acknowledged in writing by the FDIC and will receive expedited processing if the bank received an FDIC-assigned composite rating of 3 or better under the Uniform Financial Institutions Rating System as a result of its most recent Federal or State examination. A filing processed under expedited processing will be deemed approved on the third business day after receipt by the FDIC of a letter filing that includes the information set forth in § 303.42.

(c) Standard processing. For those filings that are not processed pursuant to the expedited procedures, the FDIC will provide the bank with written notification of the final action when the decision is rendered.