5 C.F.R. § 1651.13 How to apply for a death benefit.
Title 5 - Administrative Personnel
The TSP has created a paper form that a potential beneficiary must use to apply for a TSP death benefit. The TSP must receive this form before a death benefit can be paid. Any individual can file this form with the TSP record keeper. The individual submitting the form must attach to the form a certified copy of the participant' death certificate. The TSP record keeper's acceptance of this form does not entitle the applicant to benefits. [70 FR 32217, June 1, 2005]
Title 5: Administrative Personnel
PART 1651—DEATH BENEFITS
§ 1651.13 How to apply for a death benefit.