27 CFR § 28.225 - Removals of beer by brewer.
Where a brewer removes taxpaid beer from the brewery or from its place of storage elsewhere for exportation, for lading for use as supplies on vessels or aircraft, or for deposit in a foreign-trade zone, he shall execute the notice and claim on Form 1582-B (5130.6). On removal of the beer for shipment the brewer shall file one copy of Form 1582-B with the appropriate TTB officer, retain one copy for his files, and immediately forward the original and one copy of the form:
(a) In case of shipments for export or for use as supplies on vessels or aircraft, to the district director of customs at the port of export; or
(b) In the case of shipments to the armed services of the United States for export, to the commanding or supply officer to whom the shipment is consigned; or
(c) In the case of shipments to a foreign-trade zone, to the customs officer in charge of the zone.