| Current Section | Effective Date | Federal Register Notice |
Parts 2, 21, 37, 50,
52, 73, and 110 | December 18, 2019 | 11/18/2019 |
| Part 72 | November 5, 2019
[Confirmation of the effective date of November 5, 2019, for the direct final rule published August 22, 2019 (84 FR 43669)] | 10/10/2019 |
| Part 72 | December 17, 2019
[*unless significant adverse comments are received by November 4, 2019] | 10/03/2019 |
| Part 72 | November 5, 2019 | 08/22/2019 |
| Part 52 | September 19, 2019
Confirmation of the effective date of September 19, 2019, for the direct final rule published May 22, 2019 (84 FR 23439) | 08/16/2019 |
| Parts 50 and 52 | September 9, 2019 | 08/09/2019 |
| Part 72 | July 29, 2019
[Confirmation of the effective date of July 29, 2019, for the direct final rule published May 15, 2019 (84 FR 21687)] | 07/19/2019 |
| Part 52 | September 19, 2019
[*unless significant adverse comments are received by June 21, 2019] | 05/22/2019 |
| Parts 170 and 171 | July 16, 2019 | 05/17/2019 |
| Part 72 | July 29, 2019
[*unless significant adverse comments are received by June 14, 2019] | 05/15/2019 |
| Part 72 | May 13, 2019
Confirmation of the effective date of May 13, 2019, for the direct final rule published February 26, 2019 (84 FR 6055) | 04/18/2019 |
| Part 72 | May 13, 2019 | 02/26/2019 |
| Part 72 | March 4, 2019
[Confirmation of the effective date of March 4, 2019, for the direct final rule published December 18, 2018 (83 FR 64729)] | 02/19/2019 |
| Part 72 | February 25, 2019
[Confirmation of the effective date of February 25, 2019, for the direct final rule published December 12, 2018 (83 FR 63794)] | 02/19/2019 |
| Part 72 | March 12, 2019
[Confirmation of the effective date of March 12, 2019, for the direct final rule published December 27, 2018 (83 FR 66585)] | 02/15/2019 |
| Part 9 | March 4, 2019
[Confirmation of the effective date of March 4, 2019, for the direct final rule published December 19, 2018 (83 FR 65075)] | 02/11/2019 |