AFGS�87219B APPENDIX A
REQUIREMENT RATIONALE (A.3.8.1)
Status information is required by the air crew to permit safe and effective operation and control of the EPS. The system maintainer must also be provided the capability to determine the status and the unambiguous location of all faults in a timely and cost-effective manner.
REQUIREMENT GUIDANCE (A.3.8.1)
This requirement needs to be tailored to reflect requirements during air vehicle missions and during ground maintenance. Determination of status refers not only to determination of operating parameters and to detection of faults, but also to servicing and replenishment needs for consumables. The term "faults" refers not only to faults which are observable no matter when the faulty equipment is operated or tested, but also to performance-eroding faults which manifest symptoms only in particular situations. Note that for this latter type of intermittent fault, the diagnostic system must be capable of documenting the fault indications and interpreting these indications in order to recognize any significant patterns. To provide for effective implementation of this requirement, the Statement of Work should require that an Integrated Diagnostics Program Plan (IDPP) be developed and incorporated in the Systems Engineering Master Plan (SEMP) and that appropriate Integrated Diagnostics milestones be incorporated in the Systems Engineering Master Schedule (SEMS). Additional requirements addressing testability and the compatibility of testing between the factory and the various repair levels need to be developed and inserted as subparagraphs within this paragraph. The specific requirements can be guided by the IDPP. Guidance on preparation of the IDPP can be found in MIL-HDBK-1814.
REQUIREMENT LESSONS LEARNED (A.3.8.1) A.4.8 Supportability.
A.4.8.1 Integrated diagnostics and testability verification.
In-process verification that the EPS satisfies the diagnostics and testability requirements and constraints shall be accomplished by ------------. Final verification shall be accomplished by
------------.
VERIFICATION RATIONALE (A.4.8.1)
As the process of allocating the diagnostics and testability requirements is accomplished, it is necessary to synthesize the operation of the EPS's diagnostic system to establish that the diagnostics and testability requirements are satisfied. At completion of development, final verification is necessary to assure that contractual requirements have been met.
VERIFICATION GUIDANCE (A.4.8.1)
Select appropriate verification methods from the following verification methods to fill in the blanks.
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