(a) A mortgage which meets the requirements of this subpart shall be eligible for insurance without regard to the limitation in this part relating to marketability of title under the following conditions:

(1) The mortgagor is to occupy the dwelling as a principal residence (as defined in § 203.18(f)(1)).

(2) The defect or potential defect in title is a direct and primary result of outstanding claims to ownership of land in the community by an American Indian tribe, band, group or Nation.

(3) Fifty or more individual owners were joined as parties defendant or were members of a defendant class before April 1, 1980 in litigation involving claims to ownership of land in the community in which the property is located by an American Indian tribe, band, group or Nation pursuant to a dispute involving the Articles of Confederation, the Trade and Intercourse Act of 1790 or any similar State or Federal law.

(4) Such ownership claims are reasonably likely to be settled by court action or otherwise.

(5) Temporary adverse economic conditions exist throughout the community as a direct and primary result of such claims.

(b) Mortgages complying with the requirements of this subpart as modified by this section shall be the obligation of the Special Risk Insurance Fund.