CFR › Title 46 › Part 164 › §164.019-446 CFR §164.019-4Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)PFDs may be constructed only with Coast Guard-accepted PFD components meeting the requirements of this subchapter.(b)PFD components may be used in the construction of PFDs only in accordance with their Use Codes.