25 CFR § 152.7
Application for certificate of competency
February 24, 2021
Any Indian 21 years old or over, except certain adult members of the Osage Tribe as provided in §152.9, who holds land or an interest therein under a restricted fee patent may apply for a certificate of competency. The written application shall be made in the form approved by the Secretary and filed with the agency having immediate jurisdiction over the land.