14 CFR Appendix C
Typical User Activity Timeline
July 13, 2020
Open Table
| Time (approximate) | Activity |
|---|---|
| Project conceptualization (At least 3 years before launch; Ref. §1215.108(a)) | Request NASA Headquarters perform study to determine availability of TDRSS. If accepted as a user, begin contractual negotiation by submission of $25,000 non-refundable charge, and place into mission model. |
| 3 years before launch (Ref. §1215.109(c). | Submit general user requirements to permit preliminary planning. Begin payment for pre-mission activities (Ref. §1215.115(b)(5)). |
| 18 months before launch (earlier if interfacing is expected). | Provide detailed requirements for technical definition and development of operational documents and ICD's. (Ref. §1215.109(e)). If appropriate, initiate action with the Federal Communications Commission for license to communicate with TDRSS at least 18 months prior to launch (Ref. §1215.107(b)). |
| 3 weeks prior to a scheduled support period (SSP). 2 weeks prior to an SSP | Submit scheduling request to GSFC covering a weekly period. Receive schedule from GSFC based on principles of priority (Ref. §1215.109(b)(2)). Acknowledgement to GSFC required. |
| Up to 12 hours prior to an SSP. | Can cancel an SSP without charge (Ref. §1215.113(a)(1)). |
| Up to 45 minutes prior to an SPP. | Can schedule an SSP if a time slot is available without impacting another user. |
| Between SSP minus 45 minutes and the SSP. | Schedule requests will be charged at the disruptive update rate (Ref. §1215.109(b)(5)). |
| Real-Time. | Emergency service requests will be responded to per the priority system (Ref. §1215.109(b)(3)) and assessed the emergency service rate. |
[56 FR 28049, June 19, 1991]
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