Issuance of a directive.

(a) A directive will be served by delivery to the national bank or Federal savings association. It will include or be accompanied by a statement of reasons for its issuance. (b) A directive is effective immediately upon its receipt by the national bank or Federal savings association, or upon such later date as may be specified therein, and shall remain effective and enforceable until it is stayed, modified, or terminated by the OCC.