25 C.F.R. § 11.906
(a) In all hearings and proceedings under §§ 11.900-11.1114 of this part the following rights will be observed unless modified by the particular section describing a hearing or proceeding:
(1) Notice of the hearing or proceeding shall be given the minor, his or her parents, guardian or custodian and their counsel. The notice shall be delivered by certified mail. The notice shall contain: