CFR›Title 49›Subtitle B›Chapter XII›Part 1503›Subpart A›49 CFR 1503.1 Citation49 CFR 1503.1CorpusDaily eCFRDisplayed edition2026-09-09Last updated2026-09-09 § 1503.1 Scope.This part provides information on TSA's investigative and enforcement procedures. Next 1503.3 § 1503.3 Reports by the public of security problems, deficiencies, and vulnerabilities.