TPS Relationships #8 - Andon × Coaching
Andon makes abnormalities visible. Coaching helps people understand what they mean. This relationship explores how a signal can become more than a call for help: it can become a moment for observation, learning, and developing the ability of others to see for themselves.
TPS RELATIONSHIPSTPS FUNDAMENTALS
TPS Relationships #8
Andon × Coaching
Making problems visible is only the beginning
An Andon is often described as a way to signal an abnormal condition.
A light turns on.
A cord is pulled.
A call is made.
Someone comes to help.
Technically, that description is correct.
But it leaves out something important.
What happens after the abnormality becomes visible?
Because making a problem visible does not automatically mean that people understand it.
And responding quickly does not necessarily mean that learning occurred.
That is where the relationship between Andon and Coaching becomes interesting.
Andon creates the moment
Imagine an operator notices that something is wrong.
The part does not fit as expected.
A cycle takes longer than usual.
A component looks different.
A machine begins making an unfamiliar sound.
The operator signals the abnormality.
That moment matters.
The system has done something very important:
It has made the gap visible while it is happening.
Not tomorrow.
Not in a weekly KPI review.
Not after somebody reconstructs the event from a report.
Right there.
At the process.
While the evidence still exists.
That is enormously valuable.
But it is only the beginning.
What happens next can develop capability—or dependency
Suppose the team leader arrives.
There are at least two very different ways the interaction can unfold.
The first is familiar.
The leader looks at the situation, recognizes the problem, gives an instruction and gets the process moving again.
“Change this.”
“Use that one.”
“Reset the machine.”
“Call Maintenance.”
Problem contained.
Production continues.
Everybody did their job.
And sometimes that is exactly what the situation requires.
But if every Andon call ends that way, something else may slowly be developing:
dependency on the person who knows what to do.
The operator learns to recognize that something is wrong.
But not necessarily how to investigate what is wrong.
The leader becomes increasingly valuable because the leader has the answers.
The system becomes increasingly dependent on that expertise.
That is one possible relationship with Andon.
There is another.
The signal can become a teaching moment
The leader arrives.
But instead of immediately giving the answer, perhaps the first questions are:
What did you expect to happen?
What actually happened?
Where did you first notice the difference?
What changed?
What do you know, and what are you assuming?
Those questions do something different.
They do not merely address the abnormality.
They begin developing the person’s ability to see the abnormality more clearly.
And that is where Andon begins to connect with coaching.
The visible problem provides the context.
The coach helps the learner investigate it.
The process becomes the classroom.
Reality becomes the teaching material.
Andon makes the abnormal visible. Coaching develops the eyes to understand it.
That may be the relationship in its simplest form.
Andon makes the abnormal visible.
Coaching develops the ability to understand what it means.
One without the other can easily become incomplete.
Without Andon, problems can remain hidden.
People work around them.
They compensate.
They improvise.
They fix things quietly.
The system never gets the opportunity to learn.
But without coaching, a visible problem can still remain poorly understood.
We can respond to every signal and still teach very little.
We can become excellent firefighters.
Fast.
Responsive.
Experienced.
And indispensable.
But perhaps not particularly good at developing others.
A problem becoming visible is not the same as a problem being understood
This distinction matters.
Suppose an operator calls Andon because the same part repeatedly fails to fit.
The visible condition is clear.
Part does not fit.
One response is to replace the part and continue.
Another is to ask why this particular abnormality is occurring.
Perhaps the component is outside specification.
Perhaps the fixture is wearing.
Perhaps the preceding process changed.
Perhaps the work sequence changed.
Perhaps the standard itself no longer reflects reality.
Perhaps none of those explanations is correct.
The point is not to make the operator investigate everything while the line waits.
The point is that the abnormality can become the beginning of inquiry rather than the end of thought.
Contain what must be contained.
Then learn.
This is why speed alone can be misleading
Andon is sometimes admired because it enables rapid response.
And rapid response matters.
But there is an interesting danger.
If we measure success only by how quickly the issue disappears, the organization may become extremely good at restoring normal operation without ever understanding why normal operation was lost.
The symptom disappears.
The system remains unchanged.
Then the same problem returns.
And another experienced person rushes in to save the day.
Repeated often enough, firefighting can begin to look like excellence.
It is not.
A system that repeatedly requires extraordinary intervention is telling us something.
Andon can expose that pattern.
Coaching can help people learn how to read it.
Coaching does not mean refusing to help
There is another misunderstanding worth avoiding.
Coaching is not standing beside somebody while they struggle and refusing to give them information.
It is not answering every question with another question.
And it is certainly not allowing an avoidable disaster simply because we want somebody to “learn from the experience.”
Sometimes the right response is immediate instruction.
Stop the process.
Protect the customer.
Protect the person.
Contain the defect.
Restore a safe condition.
TPS does not require us to turn every abnormality into a philosophical exercise.
The judgment lies in knowing when to tell, when to show, when to ask and when to let the other person think.
That may be one of the hardest parts of coaching.
The best question depends on what the person can already see
Consider two people looking at exactly the same abnormality.
A beginner may need help recognizing what is normal in the first place.
“What should the cycle look like?”
Someone with more experience may already recognize the gap but not understand its origin.
“What changed immediately before this started?”
Someone still more experienced may be investigating the system behind the recurring problem.
“Why does this condition keep requiring manual intervention?”
The physical event may be the same.
The developmental opportunity is not.
Good coaching meets the learner where their ability to see currently is.
Then it helps them see a little further.
That is why standards matter too
This relationship also depends on something else.
You cannot recognize abnormality clearly if normality is vague.
Andon becomes far more powerful when the expected condition is visible and understood.
What should happen?
In what sequence?
Within what time?
At what quality condition?
With what inventory?
Under what operating parameters?
Without some shared understanding of normal, the signal easily becomes subjective.
“I think something is wrong.”
Maybe it is.
Maybe it isn’t.
Standardized Work and visual standards create a reference.
Andon exposes the gap.
Coaching turns the gap into learning.
That is a very different system from one in which supervisors simply patrol the process looking for mistakes.
The leader’s role changes
This is perhaps where the relationship becomes most interesting for me.
At first, leadership around Andon can feel like expertise.
Someone calls.
You know what to do.
You solve it.
That feels useful.
And it is useful.
But as experience grows, perhaps the role should gradually change.
Instead of being the person who always sees the answer first, you begin trying to develop other people’s ability to see.
That requires restraint.
Because giving the answer is often faster.
Asking a useful question takes longer.
Allowing another person to think can feel inefficient.
But the time horizon is different.
The answer may solve today’s problem.
The question may improve the way tomorrow’s problem is understood.
From escalation system to learning system
That is why I think Andon can be misunderstood when we treat it only as an escalation mechanism.
Of course it escalates abnormalities.
But perhaps its deeper value is that it creates repeated opportunities for learning directly from reality.
Every signal can become a tiny cycle:
Something deviates.
Someone notices.
The condition becomes visible.
Another person comes to see.
Together they compare expectation with reality.
They act.
They observe what happens.
They learn.
Repeated hundreds or thousands of times, those interactions do more than protect quality or flow.
They develop people.
Or they can.
The difference depends heavily on what happens after the signal.
There is also a cultural message hidden inside Andon
When a person signals a problem, the system is receiving information.
How leadership responds teaches that person what kind of information the organization actually wants.
If every call produces blame, irritation or embarrassment, people learn something very quickly:
Do not make problems visible.
If every call results in somebody taking over, they may learn something else:
Call the expert.
But when the response is curiosity, support and disciplined investigation, the lesson changes:
Problems are information. Let’s understand them.
That is not created by a slogan.
It is taught through hundreds of small interactions.
Andon provides the moment.
Coaching shapes the meaning of that moment.
And this is where it connects to learning to see
We often say that TPS teaches us to see waste.
I think the journey goes deeper than that.
First, we learn to recognize that something is abnormal.
Then we learn to understand the problem behind the abnormality.
Later, we begin to recognize the system conditions that continue producing the problem.
And eventually, perhaps, we begin helping others develop that same capacity.
Seen from that perspective, Andon is not merely a light, a cord or a signal.
It is an invitation:
Look. Something here does not match what we expected.
Coaching adds another invitation:
What can we learn from it?
The relationship
Perhaps the relationship can be summarized this way:
Andon makes the abnormal visible.
Coaching makes the abnormal understandable.
And together they can transform a problem from an interruption into an opportunity for development.
Without Andon, many problems remain invisible.
Without coaching, many visible problems remain misunderstood.
But when the two work together, something more important than problem solving can happen.
People gradually learn to recognize gaps.
To distinguish facts from assumptions.
To investigate rather than react.
To see patterns.
To understand systems.
And eventually, to help somebody else do the same.
That is when Andon stops being merely a mechanism for calling help.
It becomes part of a system for learning to see.