CFR›Title 29›Subtitle B›Chapter XL›Part 4203 ContainsSections 4203.1–4203.5CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 4203—EXTENSION OF SPECIAL WITHDRAWAL LIABILITY RULES Sections 4203.1 § 4203.1 Purpose and scope. 4203.2 § 4203.2 Definitions. 4203.3 § 4203.3 Plan adoption of special withdrawal rules. 4203.4 § 4203.4 Requests for PBGC approval of plan amendments. 4203.5 § 4203.5 PBGC action on requests. Authority29 U.S.C. 1302(b)(3).Source61 FR 34083, July 1, 1996, unless otherwise noted. Previous 4071 Part 4071—Penalties for Failure to Provide Certain Notices or Other Material Information Next 4204 Part 4204—Variances for Sale of Assets