CFR›Title 49›Subtitle B›Chapter XII›Part 1552›Subpart C ContainsSection 1552.51CorpusDaily eCFRDisplayed edition2026-05-12Last updated2026-05-12 Subpart C—Flight Training Event Management Sections 1552.51 § 1552.51 Notification and processing of flight training events. Previous B Subpart B—Security Threat Assessments