27 CFR §17.106
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The principal and surety shall execute on form TTB F 5000.18, Change in Bond (Consent of Surety), any consents of surety to changes in the terms of bonds. Form TTB F 5000.18 shall be executed with the same formality and proof of authority as is required for the execution of bonds.