| 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. |