Incident Investigation: 5 Whys & PEEPO Field Guide
How to run incident investigations that prevent recurrence. The 5 Whys finds root cause, PEEPO finds blind spots, and BLS data shows 2.8M reasons it matters.
Capture incidents on any device. Auto-generate titles with AI. Investigate using 5 Whys and PEEPO. Track every corrective action to verified closure.

Most incident investigations stop at the immediate cause and assign a corrective action that prevents nothing. Three months later the same incident happens again. The pattern is universal across industries and almost entirely avoidable.
Haloehs Incident Management is built around structured investigation methods (5 Whys and PEEPO), AI assistance for the repetitive parts, and recurrence detection that surfaces patterns across history. The investigator's judgment stays central; the administrative drag is removed.
Six capabilities that turn incident management from a paperwork burden into a working safety loop.
Incident titles, severity, location, and equipment extracted automatically from the initial report. No manual triage typing.
Built-in templates for both frameworks. Use them independently or in sequence for thorough and deep investigations.
Investigation findings convert to corrective and preventive actions with owners, deadlines, and verification steps.
AI flags when a new incident's root cause matches a previously closed one, pointing at a corrective action that failed.
Photos, videos, witness statements, equipment logs, and external documents attach to the incident record.
Multiple investigators, reviewers, and external auditors collaborate on the same record with role-based access control.
An incident begins as a report, often originating from an observation that crossed the severity threshold. The system auto-titles the incident, captures evidence (photos, witness statements, equipment state), and routes it to the appropriate investigator based on type and location.
The investigator runs PEEPO first to identify contributing factors across People, Equipment, Environment, Process, and Organization. Each significant factor then gets a 5 Whys chain to drive to root cause. The combination produces both thorough and deep investigations.
Every root cause maps to a corrective or preventive action. Each action has a named owner, a deadline, and a required verification step. Closure requires evidence; signatures alone do not close a CAPA.
AI handles the repetitive work that slows investigators down. Auto-classification removes triage typing. Similar past incidents surface automatically from the historical record, giving investigators relevant context from the start. Suggested PEEPO focus areas reflect which categories most often contribute for similar incident types.
Once an investigation is complete, AI helps generate a draft CAPA plan that the investigator reviews and refines. The investigator still owns every decision; the system removes the empty-page problem.
When the same root cause shows up across multiple incidents, the original corrective action failed. Most operations never see this pattern because their investigation records sit in separate spreadsheets.
Haloehs runs recurrence detection continuously. When a new incident's root cause matches one previously closed, both the investigator and the safety manager are flagged. The previous CAPA is surfaced for review. The next corrective action is informed by the failure of the last one.
How to run incident investigations that prevent recurrence. The 5 Whys finds root cause, PEEPO finds blind spots, and BLS data shows 2.8M reasons it matters.
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