Application required
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
(a) No person is entitled to benefits under this part unless an application on behalf of that person is filed with OPM no later than 30 years after the death of the employee, separated employee, or retiree on whose service the benefit is based.
(b) Applications for benefits under this part must be filed on the form provided by OPM for that purpose.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.