27 CFR §28.282
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
When beer has been laden on board the aircraft for use as supplies, the customs officer shall execute his certificate on both copies of the Form 1582-B (5130.6) or Form 1689 (5130.12), as the case may be, forward the original to the appropriate TTB officer designated on the form, and retain the copy for his files.