(a) Deadline. Within 30 days after the last distribution date for any affected party, the plan administrator must file with the PBGC a post-distribution certification consisting of the PBGC Form 501, completed in accordance with the instructions thereto.
(b) Assessment of penalties. The PBGC will assess a penalty for late filing of a post-distribution certification only to the extent the certification is filed more than 90 days after the distribution deadline (including extensions) under Sec. 4041.28(a).