14 C.F.R. § 1214.110 Reflight.
Title 14 - Aeronautics and Space
(a) NASA will provide a reflight of a customer's payload under conditions defined in the launch agreement. The standard flight price for reflights will be based on NASA's marginal cost as defined in §1214.102(f). Reflights only apply to dedicated flights and those shared-flight payloads that can be accommodated on a standard launch as defined in §1214.117. (b) Reflights as defined in this §1214.110 apply only to the same payload involved in the launch that necessitated the reflight, or to an essentially identical payload with essentially identical integration and flight operations requirements.
Title 14: Aeronautics and Space
PART 1214—SPACE FLIGHT
Subpart 1214.1—General Provisions Regarding Space Shuttle Flights of Payloads for Non-U.S. Government, Reimbursable Customers
§ 1214.110 Reflight.

