Aircraft MRO: Inside the Maintenance Supercycle Reshaping Aviation
Updated: 4 days ago
Executive summary. Airlines have spent five years trying to get new aircraft and have mostly failed. Delivery delays, engine durability problems and supply chain bottlenecks have kept older aircraft flying longer and pushed more of them through maintenance shops than anyone planned. In 2026 the result is a maintenance supercycle: record demand for maintenance, repair and overhaul, scarce parts and labour, and rising prices for both. Strategic Revenue Insights estimates the global aircraft MRO market at USD 105.00 billion in 2025, rising to USD 163.06 billion by 2035 at a 4.50 percent compound annual growth rate. A growing and ageing fleet, rapid growth in commercial aviation, predictive maintenance technology and tougher safety compliance are driving it. This article sets out five lessons from the MRO providers, airlines and engine makers moving first, with takeaways for strategy, engines, workforce, technology and revenue.
The structure of the market explains where the value sits. Strategic Revenue Insights' Aircraft MRO Market research finds that engine overhaul is the largest service type while modifications and upgrades are the fastest growing, that narrow-body aircraft are the most prominent aircraft segment, that commercial airlines are the largest end user with growing demand from cargo operators, and that North America is the largest region while Asia Pacific is the fastest growing. The research names the growing and ageing global fleet, rapid commercial aviation growth in emerging economies, predictive maintenance and IoT adoption and stronger safety and regulatory requirements as drivers, and the high cost of maintenance, intense competition, the risk of economic downturn and rising compliance cost as the forces working against them.
Independent forecasts confirm the scale of the cycle. Oliver Wyman's Global Fleet and MRO Market Forecast for 2026 to 2036 put global MRO demand at USD 136 billion in 2025, up 8 percent from USD 126 billion in 2024, and expects spending to reach almost USD 193 billion by the end of the decade ahead, about double the 2019 level. It counted about 30,000 aircraft in the in-service commercial fleet in early 2026, excluding Russia, rising to roughly 41,000 by 2036, and identified engine MRO as the largest and fastest growing segment. It also expects a yearly shortfall of between 12,000 and 18,000 aviation maintenance workers. Market definitions differ between sources, but the direction is not in doubt.
Why the Aircraft MRO Market Is Entering a New Phase
Three structural forces are converging.
Old aircraft are flying longer because new ones are late. Production shortfalls at the major airframers have left airlines without the replacement aircraft they ordered, so they are extending leases, deferring retirements and keeping mid-life aircraft in service. Older aircraft need heavier checks, more parts and more frequent engine visits. SRI's research names the ageing fleet as a primary driver, and Oliver Wyman notes that maintenance spending in regions with older fleets, including North America and Western Europe, will outpace fleet growth.
Engines have become the bottleneck. New-generation engines have delivered fuel efficiency but, in several programmes, shorter time on wing than planned, which has sent them back to shops early and grounded aircraft waiting for slots and parts. SRI's research identifies engine overhaul as the largest service type, and the shortage of shop capacity and spare engines is the defining constraint of the cycle. We examined the same dynamic in why time on wing has become the scarcest asset in aircraft engines.
Labour and parts are now priced by scarcity. With demand high and supply chains still recovering, prices for used serviceable material, new parts and skilled labour have risen. Oliver Wyman's workforce shortfall estimate shows that the constraint is people as much as hangars.
These forces explain SRI's forecast of steady growth to 2035, with value concentrating in engines, in modifications and upgrades, and in the fast-growing fleets of Asia Pacific.
Five Lessons From the Companies Moving First
The MRO providers, airlines and engine makers turning the supercycle into durable advantage share a recognisable pattern. We have distilled it into five lessons, each followed by a takeaway for a specific leadership function.
Lesson 1: Capacity Is the Product
In a normal market, MRO providers compete on price and turnaround time. In a supercycle, they compete on whether they can take the aircraft or engine at all. The providers growing fastest in SRI's research treat capacity as their product: hangar slots, engine shop induction capacity, test cells, component repair lines and the certified people to run them. Airlines and lessors are signing long-term agreements simply to secure access.
That changes how providers allocate capital and price. Investments in new hangars, engine shops and test cells pay back faster when every slot is filled, and long-term contracts with airlines and lessors provide the visibility to build. SRI's research lists GE Aerospace, Lufthansa Technik, AAR, ST Engineering, Air France Industries KLM Engineering and Maintenance, Delta TechOps, MTU Aero Engines, SIA Engineering, HAECO and StandardAero among the leaders, and many have announced capacity expansions during the cycle.
The risk is building at the top of the cycle. SRI's research names economic downturn as a restraint, and providers must structure expansion so that capacity remains valuable when new aircraft finally arrive in volume.
"In this cycle the most valuable thing an MRO provider can offer is not a better price. It is a slot."
Takeaway on strategy. Treat capacity as the core product: secure long-term agreements that fund expansion, prioritise investments in engine shops, test cells and component lines where scarcity is greatest, and structure contracts and facilities so capacity remains competitive after the cycle normalises.
Lesson 2: Win the Engine and You Win the Customer
Engines account for the largest share of MRO spending, and SRI's research identifies engine overhaul as the largest service type. The companies moving first build their position around engines: licences and partnerships with engine makers, shop capacity for the most widely flown engine types, spare engine pools that keep aircraft flying during shop visits, and repair technologies that reduce the need for scarce new parts.
Engine makers themselves are strengthening their grip through long-term service agreements that bundle maintenance into a per-flight-hour price. Independent providers compete by offering alternatives: licensed repairs, used serviceable material, and flexible contracts for mid-life engines that operators want to run to retirement at lowest cost.
The engine also drives modifications. Durability upgrades and hot section improvements are part of why modifications and upgrades are the fastest growing service type in SRI's research.
Takeaway on engines. Build engine capability around the most widely flown types, secure licences or partnerships with engine makers, invest in spare engine pools and part repair technologies, and develop flexible offers for mid-life engines. Treat durability upgrades as a growth line rather than a one-off.
Lesson 3: The Mechanic Is the Scarcest Part
Oliver Wyman's estimate of a yearly shortfall of 12,000 to 18,000 maintenance workers shows that labour, not hangars, may be the binding constraint. Certified mechanics and engineers take years to train, and experienced technicians are retiring while demand rises. The providers moving first treat workforce as a strategic asset: in-house training academies, partnerships with technical schools, apprenticeships, pay and retention programmes, and tooling that makes each technician more productive.
The workforce shortage also changes where work goes. Providers with training capacity and lower labour costs in Asia, Eastern Europe and Latin America are winning work from higher-cost regions, while airlines with in-house MRO are reassessing what they keep and what they outsource. SRI's research describes airline in-house MRO as a significant segment, and the make-or-buy decision is shifting as labour gets scarcer.
"You can build a hangar in eighteen months. You cannot build a licensed engine technician in eighteen months."
Takeaway on workforce. Treat workforce as capacity: build training academies and school partnerships, invest in retention and career paths, deploy tools and digital work instructions that raise technician productivity, and use lower-cost, training-rich locations to expand. Reassess make-or-buy decisions as labour scarcity changes relative costs.
Lesson 4: Predictive Maintenance Buys Back Capacity
SRI's research names predictive maintenance and IoT as drivers. In a supercycle their value is not just lower cost but recovered capacity. Health monitoring that predicts component removals lets airlines and providers plan shop visits, avoid unscheduled groundings and match parts to demand. Digital records reduce the time aircraft spend in checks, and data analytics help decide when to repair, replace or run to retirement.
The companies moving first combine aircraft and engine data with maintenance records and supply chain data to plan the whole fleet. The same agentic and analytical tools reshaping other industries, discussed in why the scaling gap decides who wins with AI agents, are being applied to maintenance planning, parts forecasting and technical records.
Digital capability also supports regulatory compliance, which SRI's research identifies as both a driver and a source of cost. Clean digital records are increasingly a condition of lease returns and asset value.
Takeaway on technology. Use predictive maintenance and fleet data to plan shop visits and parts demand, digitise technical records and work packages to cut check time, and apply analytics to repair-or-replace decisions. Measure technology investment on recovered aircraft availability and shop throughput.
Lesson 5: Follow the Fleet Into Asia and Into the Cabin
SRI's research identifies North America as the largest region and Asia Pacific as the fastest growing, on fleet expansion and air travel growth in emerging economies. The providers moving first are building capacity close to the fastest-growing fleets, often through joint ventures with airlines and engine makers in Asia, the Middle East and India.
The second growth vector is modifications. Airlines that cannot get new aircraft are upgrading existing ones: new cabins, connectivity, premium seating, freighter conversions and fuel efficiency improvements. SRI's research identifies modifications and upgrades as the fastest growing service type and notes growing demand from cargo operators. We covered the cabin side of this in why the seat has become the bottleneck of the airline industry.
The capabilities that decide who captures this demand are specific:
Capacity in engine shops, hangars and component lines, secured by long-term contracts.
Engine licences, spare engine pools and part repair technology.
Workforce training and retention that expand certified labour.
Predictive maintenance and digital records that recover capacity.
A footprint near growing fleets and a modifications business for cabins and freighters.
Companies evaluating these competitive dynamics in greater detail can use SRI's Aircraft MRO Market analysis to assess service, aircraft, organisation and end-user segments and the positioning of the leading MRO providers.
Takeaway on market development. Build or partner for capacity in Asia Pacific, the Middle East and India where fleets are growing fastest, and develop modifications capability in cabins, connectivity and freighter conversions. Use joint ventures with airlines and engine makers to secure both work and certification.
Where the Opportunity Is Concentrating
Value is moving toward engines, modifications and the fastest-growing fleets.
By service type, engine overhaul is the largest segment and the tightest bottleneck, airframe heavy maintenance and component repair are under pressure from older fleets, and modifications and upgrades are growing fastest as airlines extend and refresh existing aircraft.
By aircraft type, narrow-body aircraft are the most prominent segment because they make up most of the global fleet, while wide-body and regional aircraft carry significant engine and cabin work.
By organisation, independent MRO providers, engine maker networks and airline in-house shops are competing for capacity and contracts, with the make-or-buy balance shifting as labour gets scarcer.
By geography, North America is the largest market on fleet size and age, Asia Pacific is the fastest growing on fleet expansion, and Europe and the Middle East are major hubs with growing capacity.
At the Horizon: What to Watch Over the Next Three Years
New aircraft delivery rates. The pace at which airframers recover production will determine how long older aircraft stay in service and when maintenance demand normalises.
Engine durability fixes. Upgrades to new-generation engines that extend time on wing will reduce unscheduled shop visits over time and change the mix of engine work.
Workforce supply. Training throughput, wage inflation and migration of skilled technicians are leading indicators for capacity and pricing. Oliver Wyman's shortfall estimate is the benchmark to track.
"The next phase of MRO will not be decided by who has the biggest hangars. It will be decided by who has the engines, the people and the data to keep aircraft flying while the industry waits for new ones."
The Strategic Revenue Opportunity
For MRO providers, the task is to monetise capacity through long-term contracts while building flexibility for the downturn. For airlines, the priority is to secure slots, parts and engines, and to decide which work to keep in house. For engine makers, the opportunity is to extend service agreements and repair capability. For lessors and investors, the signal is in engine and used material values and in the asset value of clean records.
Market intelligence turns these questions into decisions. Segment-level sizing shows where service and aircraft demand is concentrating, organisation analysis shows how providers are positioned, and regional analysis shows where fleet growth will pull capacity first. This is the path from market signals to strategic insight to revenue impact.
Takeaway on revenue. Treat the aircraft MRO market as four revenue pools: engine overhaul sold on capacity and turnaround, airframe and component maintenance sold on reliability and long-term contracts, modifications and upgrades sold on fleet extension and passenger experience, and parts and used serviceable material sold on scarcity. Each needs its own contracting model. Build where fleets are growing and engines are constrained.
The Next Leg: Preparing for the Journey Ahead
The defining shift in aircraft MRO is that capacity, not price, now decides who wins work. That changes investment priorities, contracts and the competitive map. The companies moving first are not the ones with the longest service catalogue; they are the ones selling capacity, owning engine capability, building the workforce, using data to recover availability and following fleets into Asia and into the cabin.
The next three years will decide which providers use the supercycle to build durable positions and which simply ride higher prices. Decision-makers should secure capacity with long-term contracts, invest in engines and people, digitise maintenance and track delivery rates and engine fixes that will reshape demand. Companies evaluating growth opportunities in this market can use Strategic Revenue Insights' Aircraft MRO Market report to assess market size, competitive dynamics, regional opportunities and strategic growth priorities.
Sources: Strategic Revenue Insights, Aircraft MRO Market report (2026); Oliver Wyman Global Fleet and MRO Market Forecast 2026 to 2036.
Frequently Asked Questions
How big is the aircraft MRO market?
Strategic Revenue Insights estimates the global aircraft MRO market at USD 105.00 billion in 2025, rising to USD 163.06 billion by 2035 at a 4.50 percent compound annual growth rate.
What is the aircraft maintenance supercycle?
Delivery delays, engine durability problems and supply chain bottlenecks have kept older aircraft flying longer, creating record demand for maintenance, repair and overhaul along with scarce parts and labour.
Which aircraft MRO segments lead?
Engine overhaul is the largest service type and modifications and upgrades are the fastest growing. Narrow-body aircraft are the most prominent segment, airlines are the largest end user and North America is the largest region.
What are the risks in aircraft MRO?
The high cost of maintenance, intense competition, economic downturn risk and rising compliance cost are the main restraints.
About the authors: This article was prepared by the Strategic Revenue Insights research team, which combines market intelligence, competitive analysis and strategic advisory for growth-stage, mid-market and enterprise organisations across the aerospace and defense sector. Our market estimates combine primary research (interviews, surveys and expert panels) with secondary data (industry reports, databases and public disclosures); read more about how Strategic Revenue Insights works. To discuss this market with our analysts, contact our team.
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