Estimated reading time: 4 minutes
The MRO cycle is usually told as a revenue story. The bigger story is the one hiding in the paperwork.
The aviation industry ordered the future. Right now, it is flying the past.
With Airbus and Boeing still unable to clear backlogs, new aircraft are arriving years later than airlines planned. They expect supply chain constraints to limit production until at least 2030, representing more than 6,000 aircraft that would otherwise have been built.
The knock-on effect is simple: older aircraft are staying in service well beyond their intended retirement, driving the largest maintenance expansion the sector has ever seen. Analysts estimate the MRO market at roughly $96b USD in 2025, which sounds like good news for maintenance teams. More flying hours equal more revenue, right? But there is a quieter problem inside the boom, and it has nothing to do with spanners. It is paperwork.
The fleet is getting older fast.
The numbers tell a clear story. According to Arthur D. Little’s MRO Super Cycle Viewpoint, the average age of the global fleet has risen from about 13 years before the pandemic to roughly 15 years today, and the share of aircraft parked for more than five years reached a historic high of 4% in 2025. Aircraft that should have retired are instead heading back for heavier checks.
This is not a short pause. Projections state that widebody aircraft will retire at an average age of 24.4 years by 2034, with narrowbodies pushed out to 21.2 years. For the foreseeable future, managing age is the job.
Older aircraft do not just need more work. They need more proof.
Here is the part that rarely makes the headlines. An older airframe carries a heavier compliance load than a younger one doing exactly the same flying.
Heavier C and D checks. More airworthiness directives to action. Repetitive inspections for fatigue and corrosion. Life-limited parts to track. Back-to-birth records to maintain and prove. Every one of those generates documentation, revisions, signoffs, and evidence.
And that load does not scale in line with flying hours. It scales faster. A ten-year-old aircraft and a twenty-year-old aircraft can fly the same route on the same day, yet the older one demands materially more in inspections, controlled content and traceable proof. The work is visible on the hangar floor. The paperwork is not, until it goes wrong.
The real risk: the gap between the revision and the technician.
When documentation volume climbs while the workforce is already stretched thin, the failure point is rarely the task. It is the chain between a revision being issued and the right, current version reaching the technician doing the job.
A task card updated in engineering, which another department only sees three days later. A repetitive inspection is logged in one system while the qualification to perform it sits in another. A corrective action that closes in one base but not across every shift and vendor. None of these reflect a lack of skill or intent. They reflect fragmentation, and an ageing fleet exposes fragmentation faster than anything else.
The constraint in this cycle is not hangar capacity. It is whether the right information reaches the right person, at the right moment, with proof that it did.
Turning the burden into an advantage.
The operators who will thrive treat documentation as the spine of airworthiness, not as overhead to be tolerated. The difference between the two is whether content, training, and safety actions work as one system or as separate silos that an ageing fleet quietly pulls apart.
This is where the discipline of connected operations earns its keep. When technical actions sit on one platform, a revision reaches the right technician with the right authorisation, corrective actions close across every station, and audit evidence builds itself in the background. The Comply365 Platform is built around exactly that model. The older the fleet, the more that discipline pays back.
The aircraft may be older. The way you manage them does not have to be.
The MRO cycle will not last forever. As production normalises towards the end of the decade, fleet ages will ease and retirement schedules will return closer to historic norms. But the operators who build disciplined, connected content control now will carry that advantage into the next fleet generation, long after the backlog clears.
Age is not the enemy. Losing control of the paperwork is.
A question you should be asking yourself: As your fleet gets older, where does the chain break first for you: getting the right revision to the floor, tracking inspections and life-limited parts, or proving it all at audit?
