CFR›Title 48›Chapter 5›Part 509 ContainsSubparts 509.1–509.4CorpusDaily eCFRDisplayed edition2026-05-28Last updated2026-05-28 PART 509—CONTRACTOR QUALIFICATIONS Subparts 509.1 Subpart 509.1—Responsible Prospective Contractors Sections 509.105–509.106-2 509.2 Subpart 509.2 [Reserved] 509.3 Subpart 509.3—First Article Testing and Approval Sections 509.306–509.308-2 509.4 Subpart 509.4—Debarment, Suspension, and Ineligibility Sections 509.401–509.407-3 Authority40 U.S.C. 121(c).Source64 FR 37207, July 9, 1999, unless otherwise noted. Previous 504 Part 504—Administrative Matters Next 511 Part 511—Describing Agency Needs