[Code of Federal Regulations] [Title 20, Volume 1] [Revised as of April 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 20CFR219.63] [Page 257] TITLE 20--EMPLOYEES' BENEFITS CHAPTER II--RAILROAD RETIREMENT BOARD PART 219_EVIDENCE REQUIRED FOR PAYMENT--Table of Contents Subpart D_Other Evidence Requirements Sec. 219.63 What evidence is required to establish ``good cause''. The Board will ask for the following evidence of ``good cause'': (a) The claimant's signed statement explaining why he or she did not file the application for lump-sum death payment or annuity unpaid at death or the parent's proof of support within the specified two-year period. (b) If the statement in paragraph (a) of this section or other evidence raises a reasonable doubt as to whether there was good cause, other convincing evidence to establish ``good cause''.