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

1. (1) File form TTB F 5110.41, Registration of Distilled Spirits Plant, to amend the registration; and
2. (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. (1) File TTB F 5110.41 to amend the registration;
2. (2) Include the information required under § 19.73(b); and

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

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