25 C.F.R. § 11.503 Applicable civil procedure.
Title 25 - Indians
The procedure to be followed in civil cases shall be the Federal Rules of Civil Procedure applicable to United States district courts, except insofar as such procedures are superseded by order of the Court of Indian Offenses or by the existence of inconsistent tribal rules of procedure.
Title 25: Indians
PART 11—LAW AND ORDER ON INDIAN RESERVATIONS
Subpart E—Civil Actions
§ 11.503 Applicable civil procedure.