14 C.F.R. § 1214.806 Premature termination of Spacelab flights.
Title 14 - Aeronautics and Space
If a dedicated-Shuttle Spacelab flight, a dedicated-pallet flight, or dedicated-FMDM/MPESS flight is prematurely terminated, NASA shall refund the optional services charges for planned, but unused, extra days on orbit. If a complete-pallet or shared-element flight is prematurely terminated, NASA shall refund a pro rata share of the charges for planned, but unused, extra days on orbit to customers whose payload operations are, in NASA's judgment, adversely affected by such premature termination. The basis for proration shall be the customers' Shuttle load factor.
Title 14: Aeronautics and Space
PART 1214—SPACE FLIGHT
Subpart 1214.8—Reimbursement for Spacelab Services
§ 1214.806 Premature termination of Spacelab flights.

