43 CFR §2569.507

1. (a)If an Eligible Individual dies during the application process, another individual may continue the application process as a personal representative of the estate of the deceased Eligible Individual by providing to the BLM the materials described in § 2569.404(b)(2).
2. (b)If an Eligible Individual becomes incapacitated during the application process, another individual may continue the application process as a court-appointed guardian or conservator or as an attorney-in-fact for the Eligible Individual by providing to the BLM the materials described in § 2569.404(b)(3) or (4).
3. (c)If a deceased or incapacitated Eligible Individual has received a notice from the BLM that requires a response within 60 days, as described in § 2569.410, § 2569.501(e), § 2569.501(h)(3), § 2569.502(b), or § 2569.503(a), and no personal representative, guardian, or conservator has been appointed, or no attorney-in-fact has been designated, the individual who receives the notice, or an employee of the BIA or a Realty Service Provider, may respond to the notice in order to request that the BLM extend the 60-day period to allow for a personal representative, guardian, or conservator to be appointed. The BLM will extend a 60-day period under this paragraph (c) for up to two years.
4. (d)If the BLM has completed a Draft Plan of Survey as described in § 2569.501(d) or a survey as described in § 2569.501(g), and the estate of the deceased Eligible Individual does not wish to dispute the Draft Plan of Survey as described in § 2569.501(e) or the results of the survey as described in § 2569.501(h), then the BLM will not require a personal representative to be appointed. The BLM will continue to process the application.
5. (e)Other than as provided in paragraphs (b), (c), and (d) of this section, the BLM will not accept any correspondence on behalf of a deceased or incapacitated Eligible Individual from an individual who has not provided the materials described in § 2569.404(b)(2), (3), or (4).