rca-analysis

# Root Cause Analysis Skill ## Overview The Root Cause Analysis (RCA) skill provides structured methodologies and tools for conducting thorough root cause investigations for incidents and problems. This skill supports multiple analysis frameworks including 5-Whys, Fishbone/Ishikawa diagrams, and Fault Tree Analysis to identify underlying causes and drive permanent corrective actions. ## Capabilities ### 5-Whys Analysis - Facilitate structured 5-Whys questioning - Document causal chain progression - Identify stopping criteria for root causes - Generate 5-Whys analysis reports - Track branching cause paths - Validate root cause identification ### Fishbone/Ishikawa Diagrams - Generate fishbone diagram structures - Organize causes by category (6M model) - Support custom category definitions - Create visual diagram outputs (Mermaid, SVG) - Facilitate brainstorming sessions - Document contributing factors ### Fault Tree Analysis - Build fault tree logical structures - Define AND/OR gate relationships - Calculate probability propagation - Identify minimal cut sets - Generate fault tree visualizations - Support quantitative risk analysis ### Contributing Factor Identification - Analyze multiple cause categories - Identify systemic vs. proximate causes - Document environmental factors - Assess human factors contributions - Evaluate process deficiencies - Identify technology failures ### Root Cause Confidence Scoring - Calculate confidence levels for identified causes - Assess ...