The NASA governance model prescribes a management structure that employs checks and balances between key organizations to ensure that decisions have the benefit of different points of view and are not made in isolation. The TA process (see NPR 7120.5, NASA Space Flight Program and Project Management Requirements, Chapter 3.3) provides for the selection of individuals at different levels of responsibility who contribute an independent view of matters within their respective areas of expertise. These individuals are responsible for assuring that changes to and waivers of technical requirements are submitted to and acted on by the appropriate level in the TA process. The involvement of the TA in program/project activities as a member of the program's/project's control, change, and internal review boards will ensure that any views from the TA will be available to the program/project in a timely manner.
The Center Director is delegated Technical Authority (TA) from the NASA Chief Engineer. With this delegation, the Center Director selects and approves software TA(s) who are knowledgeable of the software development policies, requirements, and practices that are applicable to a given project. This is important because the Center Director, who is ultimately responsible for all projects at the Center, is appointing TA(s) who are responsible for approval of deviations and/or waivers.
It is essential that the project TA(s) thoroughly understands the Agency-level, Center-level, Project-level software development requirements, including NPR 7150.2, NASA STD 8739.8, NASA Software Assurance Standard , and NASA STD 8719.13, Software Safety Standard .
The Center Director (or designee) is empowered by NPR 7150.2 to select civil servant individual(s) from the Office of the Chief Information Officer (CIO) at Headquarters for class F software or from the Center's CIO office, if that makes the most sense, for classes G and H software. This ability to choose will assure the software TA is familiar with the software development policies, requirements, and practices associated with a particular class of software.
Because of the extent and variety of projects at a Center, it may be beneficial to assign multiple software TAs, each having responsibility for a unique portion of the software being developed or acquired in support of the Center's mission. The appointment of software TAs may be documented in appointment letters from the Engineering Technical Authority (or designee), in the Center implementation plans, in project plans, and in organization and project-specific documentation repositories.