Most airport maintenance models follow a familiar process. Equipment is checked, faults are identified, engineers attend, and repairs are made.

For many systems, that works perfectly well.

Passenger charging is a little different.

A charging point can look completely normal and still not deliver the service a passenger expects. One port may have failed. A cable may no longer be working properly. Power may have been interrupted. And a unit that was functioning when it was inspected on Monday may have developed a fault by Tuesday.

Unless somebody tests it again, or a passenger reports the problem, the airport may have no way of knowing.

That creates a gap between what is installed and what is actually available to passengers. Across a large airport, that gap can become significant.

The Limits of Manual Inspection

A manual inspection provides a useful snapshot of performance, but only at a particular moment in time.

That becomes increasingly difficult as charging networks grow. Airports can have hundreds of individual charging connections spread across gates, seating areas, lounges and terminal buildings. Properly checking them takes time, and a visual inspection alone will not necessarily identify a problem.

The model's real weakness is what happens between inspections.

A connection can fail shortly after it is checked and remain unavailable until the next inspection or until someone reports it. Meanwhile, it may still be counted as part of the airport's charging provision.

To the passenger standing in front of it, however, it is simply broken.

This is not a failure of the maintenance team. It is the consequence of trying to manage a constantly used passenger service with information available only periodically.

As individual connections are used thousands of times over their lifetime, small failures can accumulate quietly across a charging network. An airport can appear well provided for on paper while delivering a very different experience in practice.

Detect First, Then Fix

Connected infrastructure changes this by allowing the charging network to report its own performance.

Instead of relying entirely on physical inspection or passenger complaints, operators can identify faults remotely. The airport or service provider can see where the problem is and which connection is affected before an engineer arrives.

The physical repair may still be needed. Connected technology does not eliminate maintenance.

What changes is the information available before intervention.

There is a considerable difference between sending an engineer to investigate a general report that charging is not working and knowing before they arrive which unit or connection requires attention.

One approach sends an engineer to diagnose the problem.

The other gives them the information to address it.

That makes maintenance more targeted and potentially much more efficient.

Moving Towards Intervention by Exception

This also changes the role of routine inspection.

Physical inspections remain important for safety, condition and preventative maintenance, but they no longer need to be the only way an airport understands whether its charging network is working.

Connected systems can highlight the exceptions. A failed connection can be identified. Recurring problems can be recognised. Higher-impact failures can be identified and prioritised.

The charging network starts providing operational information rather than waiting to be inspected.

That matters because passenger charging is not a static facility. Usage varies by time of day, location and passenger flow. Equipment is exposed to constant public use, and problems emerge unevenly.

A maintenance approach built around real performance better suits that reality.

Heathrow: What Better Visibility Can Achieve

Heathrow provides a useful example of how this approach can work in practice.

ChargeBox began with a passenger charging trial in Terminal 2. Heathrow Procurement Director Paul Doherty has since described its success in improving passenger satisfaction and how it paved the way for a wider rollout across the airport.

More recently, he marked another significant milestone: three million passenger devices charged at Heathrow through ChargeBox.

Just as importantly for the operational argument, Doherty reported that the charging assets were achieving 99.8% availability, attributing that performance to proactive fault detection.

The impact is also evident in how faults are managed. Since the wider deployment, interventions relating to complete charging-unit outages have fallen by more than 90%.

These figures demonstrate the difference between simply installing charging and actively managing its performance.

Proactive fault detection gives the service provider visibility when something goes wrong, rather than depending entirely on scheduled inspections or waiting for passengers to report a problem.

The maintenance requirement does not disappear. What changes is the speed and quality of the information available before intervention is needed.

For passengers, the outcome is straightforward: charging is far more likely to be working when they need it.

For the airport, the charging network becomes something it can monitor and manage rather than simply install and periodically check.

Availability Becomes Something You Can Manage

Once a charging network's performance is visible, availability stops being an assumption and becomes measurable.

An airport can understand what proportion of its charging service is available, where faults occur, and how quickly they are resolved.

Patterns also start to emerge.

Some locations may experience more failures than others. Particular components or connection types may prove more robust. High-demand locations may require additional capacity.

That information is useful far beyond maintenance. It can inform future procurement, infrastructure design, capacity planning and investment decisions.

Without data, these decisions often rely on assumptions, periodic observations, or anecdotal feedback.

With data, the charging network becomes something the airport can understand and continuously improve.

A Better Maintenance Model

The shift from inspect-and-fix to detect-and-fix is not about technology for technology's sake.

It is about visibility.

Traditional inspection starts with the maintenance schedule. Connected infrastructure starts with what the service is actually doing.

That shifts maintenance from periodically checking whether something has gone wrong to responding with much greater precision when it does.

As airports become increasingly data-led in managing passenger experience, it makes little sense for charging infrastructure to remain largely invisible until somebody discovers a fault.

A better model identifies problems quickly, targets maintenance intelligently and makes availability clear rather than assumed.

Because a charging connection that has failed but nobody knows about may still count as installed capacity.

It just does not count for the passenger.