27 CFR § 19.627 - Alternating premises record.
When distilled spirits plant bonded premises are alternated to or from bonded or taxpaid wine, brewery, manufacturer of nonbeverage products, or general premises, under an approved alternation plan described in the plant registration, the proprietor must record in a logbook, or must maintain in commercial records retrievable and available for TTB inspection upon request, the following information:
(a) The date and hour of the alternation;
(b) The kind of premises being curtailed, including the plant identification number, if applicable;
(c) The kind of premises being extended, including the plant identification number, if applicable;
(d) The identity of the special diagrams in the registration documents depicting the premises before and after the alternation; and
(e) The purpose of the alternation.
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