20 C.F.R. § 219.62 When evidence of “good cause” is required.
Title 20 - Employees' Benefits
The principle of “good cause”, as defined in part 217 of this chapter, is applied by the Board in determining whether to allow an application which is submitted more than two years after the employee's death as acceptable for the lump-sum death payment or for an annuity unpaid at death, or to accept the proof of support required for entitlement to a parent's annuity if such proof is filed more than two years after the employee's death.
Title 20: Employees' Benefits
PART 219—EVIDENCE REQUIRED FOR PAYMENT
Subpart D—Other Evidence Requirements
§ 219.62 When evidence of “good cause” is required.

