[Code of Federal Regulations] [Title 20, Volume 1] [Revised as of April 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 20CFR225.51] [Page 454] TITLE 20--EMPLOYEES' BENEFITS CHAPTER II--RAILROAD RETIREMENT BOARD PART 225_PRIMARY INSURANCE AMOUNT DETERMINATIONS--Table of Contents Subpart F_Recomputing PIA's Sec. 225.51 PIA's that are subject to recomputation. The following PIA's are subject to recomputation-- (a) Tier I PIA; (b) Survivor Tier I PIA; (c) Overall Minimum PIA; (d) Employee RIB PIA; and (e) Residual Lump-Sum PIA.