(a) If the proprietor wishes to conduct additional operations involving spirits, other than those approved on the current registration, the proprietor must:

(1) File form TTB F 5110.41, Registration of Distilled Spirits Plant, to amend the registration; and

(2) Not engage in the additional operations prior to approval of the amended registration.

(b) If the proprietor wishes to engage in another business that is authorized under §19.55 the proprietor must:

(1) File TTB F 5110.41 to amend the registration;

(2) Include the information required under §19.73(b); and

(3) Not engage in the other business until approval of the amended registration is received.

(26 U.S.C. 5171, 5172, 5271)