How aviation maintenance infrastructure is reinventing itself

From the outside, aviation often appears to be a system where everything runs smoothly. Planes take off every few minutes, processes mesh seamlessly, and delays seem to be the exception rather than the rule. Yet this impression is somewhat misleading. Behind the scenes, things do not run quite so smoothly, especially when it comes to maintenance.

Recently, the pressure has increased significantly. Airlines are operating more aircraft than before, and at the same time, these must be available as continuously as possible. An aircraft grounded costs money – immediately. Everyone in the industry knows this, yet it cannot always be avoided.

Growing fleets, more work behind the scenes

With every new aircraft, maintenance requirements also increase. And these aren’t flexible. The intervals are clearly set, regardless of whether the flight schedule is full or not. At some point, the aircraft has to be taken out of service – full stop.

Then you need a place where work can be carried out. This is exactly where the MRO hangar comes into play. For a long time, this wasn’t a major issue. Hangars were simply there; they were used, and that worked.

Now, however, it is becoming clear that they play a bigger role than many realised. If there isn’t enough space, a scheduled maintenance job quickly turns into a problem. Deadlines are pushed back, schedules get thrown into disarray, and in the end, the aircraft is grounded for longer than necessary.

The hangar takes center stage

It used to be something that happened in the background. Today, many people are taking a closer look. The hangar is no longer just any old building on the site but something that directly affects operations.

If there is sufficient capacity and the processes are right, you notice it immediately. Maintenance can be planned more effectively, and there is less stress in day-to-day operations. That may sound unspectacular, but it makes a real difference.

Many airlines now recognise this. Those who are well-positioned in this area can save themselves a lot of problems and costs in the long run.

When downtime becomes really costly

The full extent of the situation becomes clear when an aircraft is grounded unexpectedly. At that point, it is no longer a theoretical issue but a question of real numbers.

An aircraft such as the Airbus A320 typically operates several rotations per day. If it is taken out of service, revenue in the five-figure range can be lost very quickly. Industry estimates often place this at around €70,000 to €120,000 per day, depending on utilisation and route structure.

And that is only the direct loss. Additional costs arise almost immediately: flights need to be reorganised, crews rescheduled, and in some cases replacement aircraft must be deployed. If disruptions affect passengers, compensation payments may also apply. Altogether, this can add another €20,000 to €50,000 per day, if not more.

At the same time, airlines are continuing to expand their fleets. Companies such as Ryanair and Lufthansa are investing in new aircraft to meet demand. Growth, however, comes with increased maintenance requirements.

The wider impact of these operational pressures is also reflected at industry level. According to the International Air Transport Association, ongoing supply chain constraints and operational challenges are expected to cost airlines billions globally, underlining how critical efficient maintenance and infrastructure have become.

The challenge is that infrastructure is not keeping pace. Aircraft can be delivered within relatively short timeframes, but building new maintenance hangars is a far longer process. Planning, approvals, and construction can take several years: time that airlines often do not have.