PART	Title	Time
1	PART 1—DEFINITIONS AND ABBREVIATIONS	July 7, 2025
3	PART 3—GENERAL REQUIREMENTS	July 7, 2025
5	PART 5—SAFETY MANAGEMENT SYSTEMS	July 7, 2025
11	PART 11—GENERAL RULEMAKING PROCEDURES	July 7, 2025
13	PART 13 - INVESTIGATIVE AND ENFORCEMENT PROCEDURES	June 10, 2021
14	PART 14—RULES IMPLEMENTING THE EQUAL ACCESS TO JUSTICE ACT OF 1980	July 7, 2025
15	PART 15—ADMINISTRATIVE CLAIMS UNDER FEDERAL TORT CLAIMS ACT	July 7, 2025
16	PART 16—RULES OF PRACTICE FOR FEDERALLY-ASSISTED AIRPORT ENFORCEMENT PROCEEDINGS	July 7, 2025
17	PART 17—PROCEDURES FOR PROTESTS AND CONTRACT DISPUTES	July 7, 2025
21	PART 21—CERTIFICATION PROCEDURES FOR PRODUCTS AND ARTICLES	July 7, 2025
23	PART 23—AIRWORTHINESS STANDARDS: NORMAL CATEGORY AIRPLANES	July 7, 2025
25	PART 25 - AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES	June 10, 2021
26	PART 26—CONTINUED AIRWORTHINESS AND SAFETY IMPROVEMENTS FOR TRANSPORT CATEGORY AIRPLANES	July 7, 2025
27	PART 27—AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT	April 4, 2023
29	PART 29—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY ROTORCRAFT	April 4, 2023