Root Cause Analysis · February 2026 · 9 min read

Humans Make Errors.
That Is Not the Root Cause.
It Is the Starting Point.

Every corrective action database in the world is filled with the same three words. Here is why that is a problem, and what to do instead.

February 2026 9 min read Human Factors and RCA
Scroll

A few years ago I worked with a global company that had received a direct message from the FAA: your incident rate is climbing, and your organization's problem-solving skills need to catch up. Fix it, or else. Not their exact words, but you get the picture.

When we started digging into how their internal teams were investigating, one of their program champions described a pattern that had repeated so many times it had become invisible to everyone inside it.

"Failure to follow SOP."

That was the root cause. Every time. Retraining was the corrective action. Every time. Investigation closed, box checked, same incident back on the table six months later.

Here is the question they finally stopped to ask (rhetorically): if retraining is working, why do we keep retraining the same problems?

You already know the answer. Retraining is not working. It never was.

One of the foundational principles of Human and Organizational Performance is deceptively simple: humans are fallible. They are going to make mistakes. Not because they are careless, undertrained, or uncommitted. Because they are human. Retrain one person, retrain a hundred, and the next person will still make the same mistake under the same conditions. The condition is the problem. Not the person.

So what do we do with that? If no amount of training will prevent people from being human, where does that leave us? The answer is that we have to engineer out the ability to make the mistake in the first place. We have to find the barriers that should exist and build them. We have to look at the system the person was operating inside and ask why that system made the mistake easy to make, hard to catch, and impossible to stop from becoming an incident.

Organizations are built on frameworks that made sense when they were created. But organizations grow. Headcount doubles. Facilities expand. Processes evolve. And the frameworks, far too often, stay exactly where they were on day one. The risk does not stay the same. It accumulates quietly until something breaks and everyone looks at the person holding the bag.

Think about what COVID did to organizations. Processes that had never been questioned were dismantled overnight. New ones were built in days. How many of those changes happened without anyone fully thinking through the downstream effects? Most of them. And organizations are still living with the consequences of decisions that moved fast and broke things that were holding more weight than anyone realized.

That is the world your people are investigating inside. Not a stable, well-documented, neatly controlled environment. A living system that has been layered, patched, restructured, and stress-tested in ways nobody fully mapped.

And when something goes wrong inside that system, we write "human error" on a form and call it done.

Human error is not a root cause. It is a signal. It is the system telling you something is wrong with the conditions it created. The question is whether you are willing to follow that signal past the person who happened to be standing at the end of it.

Standard Investigation
Root cause: Operator Error
INCIDENT Aircraft struck by belt loader during positioning WHY 1 Operator drove loader too close WHY 2 Operator misjudged safe distance WHY 3 Operator was rushing to meet turnaround WHY 4 Inbound flight was late, limiting delay ROOT CAUSE (STANDARD INVESTIGATION) Operator Error Failed to follow safe positioning procedure Corrective Action: Retrain. Warn. Meeting.
Step 01, The Incident

The investigation that concluded in 20 minutes

A baggage handler at a regional airport positions a belt loader too close to an aircraft during turnaround. The loader strikes the fuselage. The aircraft is grounded for inspection. Four hours of delays cascade through the network.

The supervisor pulls the CCTV footage. It is clear. The operator drove too close. The operator admits he misjudged the distance.

Five questions get asked. Five answers get recorded.

Root cause: Operator error. Failed to follow safe positioning procedure. Corrective action: retrain the operator, issue a written warning, add positioning safety to the next team safety meeting. Investigation closed.
Step 02, The Pattern

Three incidents. Three retrainings. Nothing changed.

Three months after the investigation is closed, a different operator damages a different aircraft in the same way. New investigation. Same finding. Same corrective action.

Six months later, it happens again.

The organization has now root-caused three ground damage incidents to human error. Three operators have been retrained. Three warnings issued. Three safety moments delivered. And nothing has changed about the system that keeps producing these incidents.

This is the retraining trap. Every time the answer is human error, the corrective action is aimed at a person. And every time, the system that produced the error remains fully intact, waiting for the next person to walk into it.
Step 03, Beyond the Obvious

The questions the investigation never asked

A deeper investigation follows every branch, not just the one that leads to a person. Two causal chains emerge immediately.

The left branch asks why the operator misjudged distance. Were there physical guides or markings defining safe positioning? Did the operator have clear sight lines from the driver's seat? Do experienced operators actually follow this procedure, or has a workaround quietly become the standard?

The right branch asks a harder question: why did one misjudgment make it all the way to the aircraft? What barriers exist between an operator error and an aircraft strike? Why did this error penetrate every layer of the system with nothing stopping it?

When you ask why the system allowed this, the investigation stops being about one person and starts being about the conditions every person works inside.
Step 04, The Real Root Causes

The causes the investigation would have found

There is rarely a single root cause for why something goes wrong. AtlyssAI surfaces the full picture: multiple contributing causes across different branches, and the deeper systemic causes that sit beneath all of them.

In this investigation, two confirmed systemic causes emerge. First: no physical barrier existed between the operator's error and the aircraft. A single misjudgment had nothing to stop it. That is a design failure, not a performance failure.

Second, and deeper: the incentive structure in that operation consistently communicated that turnaround speed was the only metric that mattered. Nobody told the operator to rush. The environment told him. Every single day.

Fix the operator and nothing changes. Fix the system, and you change the outcome for every operator who comes after him. The person is exonerated. The system is indicted.
The Blame Trap

Organizations do not consciously decide to blame individuals. But the structures of most investigations make individual blame the path of least resistance. The investigation form has a box for "employee responsible." The corrective action system is designed for retraining and write-ups. The timeline pressure pushes toward fast closure. Swimming against that current takes deliberate effort. Most investigations never try.

The Solution

5 ways to break the pattern

If your investigations keep landing on human error, here is how to change that.

01
Treat it as a starting point
When you find that someone made a mistake, write it down, then keep going. The error is the beginning of the investigation, not the conclusion. Ask what conditions made it possible, likely, or inevitable.
02
Ask what made it make sense
People do not usually do random things. Find the logic behind the error: what the person knew, what they were trying to accomplish, what pressure they were under. That logic points directly to conditions you can actually change.
03
Look for missing barriers
A single error should not produce a significant outcome in a well-designed system. If this one did, your barriers failed. That is a finding worth the full weight of your investigation.
04
Check whether the procedure matches reality
If the root cause is failure to follow procedure, ask whether anyone actually follows that procedure under these conditions. A procedure that nobody follows in practice is not a procedure. It is a liability document.
05
Follow the questions you are afraid to ask
The most important causal factors are often the ones that point upward. Unrealistic schedules. Inadequate training. Equipment with known problems. If your investigation never looks above the operator level, it is not finding root causes. It is finding the person who was closest to the outcome.
The Contrast

Human error investigation vs. systemic investigation

Standard Output
What most organizations conclude
xRoot cause: operator failed to follow procedure
xCorrective action: retrain the operator
xIssue a written warning
xAdd a safety moment to the next team meeting
xSame incident occurs three months later with a different operator
AtlyssAI Output
What systemic investigation reveals
Root cause: no physical barrier between operator error and aircraft contact
Root cause: incentive structure communicated speed was the only metric that mattered
Action: evaluate equipment for proximity barrier controls
Action: audit turnaround incentive structure against safety behavior expectations
System fixed. Next operator inherits a safer environment.
The Bottom Line

When your investigation concludes with "human error"
you have not found the root cause.

You have found the place where it was convenient to stop looking. Humans are going to make mistakes. That is not a moral failing. It is a fact of human performance that no retraining program will change. The organizations that understand this build systems that make mistakes harder to make, easier to catch, and less consequential when they happen. That work starts with investigations that follow the signal past the person who was holding the bag when the system failed.

AtlyssAI is built for investigators who know the answer is never the person.

See AtlyssAI in action

Related: Why 5 Whys Falls Short