14 C.F.R. § 1215.106 User command and tracking data.
Title 14 - Aeronautics and Space
(a) User command data may enter the TDRSS via the NASCOM interface at one of three locations: (1) For Shuttle payloads which utilize the Shuttle commanding system, command data must enter the system via the Johnson Space Center (JSC) and is governed by the policies established for STS services (see §1215.101). (2) For free flyers and other payloads, command data must enter the system at the Goddard Space Flight Center (GSFC) if it is to be a standard service. (3) The use of other command data entry points [e.g., the NASA Ground Terminal (NGT) at White Sands, NM, or Johnson Space Center (JSC), for payloads using an independent direct link from TDRS to the user payload] is considered to be a mission unique service. (b) NASA is required to maintain the user satellite orbital elements to sufficient accuracy to permit the TDRS system to establish and maintain acquisition. This can be accomplished in two ways: (1) The user can provide the orbital elements in a NASA format to GSFC to meet TDRSS operational requirements. (2) The user shall insure that a sufficient quantity of tracking data is received at GSFC to permit the determination of the user satellite orbital elements. The charges for this service will be determined by using the on-orbit service rates.
Title 14: Aeronautics and Space
PART 1215—TRACKING AND DATA RELAY SATELLITE SYSTEM (TDRSS)
Subpart 1215.1—Use and Reimbursement Policy for Non-U.S. Government Users
§ 1215.106 User command and tracking data.
