CFR › Title 25 › Part 170 › §170.12225 CFR §170.122Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)A Tribe can use TTP funds for construction of airport and heliport access roads, if the access roads are open to the public.(b)A Tribe cannot use TTP funds to construct, improve, or maintain airport or heliport facilities.