page_title: Bent pin analysis
section_title: A Bent Pins FMEA Worksheet
hierarchical_section_title: Bent pin analysis / Performing Bent Pin Analysis / A Bent Pins FMEA Worksheet
caption_attribution_description: English: Bent Pin Analysis Worksheet
context_page_description: Bent pin analysis is a special kind of failure mode and effect analysis performed on electrical connectors, and by extension it can also be used for FMEA of interface wiring. This analysis is generally applicable to mission-critical and safety-critical systems and is particularly applicable to aircraft, where failures of low-tech items such as wiring can and sometimes do affect safety.
context_section_description: Figure 4 is a simplified sample of a typical FMEA worksheet for bent pin analysis.  Additional columns of information may be added as shown in the separate article on FMEA.  This sample is based on a format generated by a bent pin analysis software package and using data for a 79-pin connector.  (Some columns of information have been removed from the original format to limit the table size for this article.)  Information shown in the figure is derived from connector-related information as described above.  Mid- and System ("Hi") level effect descriptions are not shown but would be supplied by human analysts.  In cell A2 of this sample, “P5-1@” means that Pin 1 of connector P5 has opened a path due to causes other than bending.  In cell A3, “P5-1” means that the Pin 1 path has been opened due to bending (but not touching anything else).  While the effects of these two failure modes are the same, they are listed separately on the worksheet because their failure rates are different and reflect the fact that open path failures are far more likely than shorted path (bend-related) failures.  The failure rates in column G are per million hours and the sum of all failure rates equals the connector failure rate. (The individual failure rates are derived from the connector failure rate.)
caption: Figure 4 – Typical Bent Pin Analysis Worksheet
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