scope:

PURPOSE To establish policy, responsibilities, and procedures in order to provide common maintainability and maintenance planning for Marshall Space Flight Center (MSFC) projects to: a. Design maintainability into all systems in the formulation phase where maintenance is a factor in system operation and mission success; and b. Ensure maintainability characteristics are developed and maintenance planning is accomplished through the system engineering process. This Directive implements the latest edition of NHB 5300.4(1E), "Maintainability Program Requirements for Space Systems." APPLICABILITY This Directive applies specifically to MSFC program/project offices having responsibility for the design of manned and unmanned projects when maintenance is planned. One-shot systems and payloads for which a decision has been made that maintenance will not be required are excluded. NHB 5300.4(1E), which pertains specifically to programs/projects where on-orbit maintenance is planned, may be tailored to meet specific MSFC program/project needs and constraints in order to obtain a timely and cost-effective maintainability program. In addition to programs/projects requiring on-orbit maintenance, other programs/projects may select portions of NHB 5300.4(1E), as appropriate.