Attachment 10c.8 – E053 Shelter Time Server-FMECA.xlsx

This document contains a preliminary failure modes and effects criticality analysis (FMECA) for an Integrated Battle Command System (IBCS) shelter time server.

The FMECA identifies 57 potential failure modes for components of the time server including failures of the power supply, processors, interfaces, and Ethernet and timing circuits. Each failure mode is assessed for its effects on component, system and end item operation. Severity classifications are assigned and mitigations considered such as redundant electronics-on-circuit boards. With redundancies, severity classifications are reduced from Category I to Category III. The FMECA was performed to support an upcoming IBCS low rate initial production/full rate production hardware contract requiring production of IBCS hardware end items in accordance with technical data packages and specifications, including engineering changes for obsolescence, new capabilities and export.