48 C.F.R. § 817.7002 – Exceptions.

(a) The following undefinitized contract actions (UCAs) are not subject to this subpart:
1. (1) Purchases at or below the simplified acquisition threshold.
2. (2) Congressionally mandated long-lead procurement contracts.
(b) However, the contracting officer shall apply the policy and procedures to the contract actions in paragraph (a) to the maximum extent practicable.