The Aircraft Engine MRO Market — encompassing maintenance, repair, and overhaul services — is a critical element of the global aviation aftermarket. According to WiseGuyReports, the market was valued at around USD 68.8 billion in 2024 and is forecast to grow to USD 85 billion by 2035, reflecting a steady 2.0% CAGR over the 2025–2035 period. This steady expansion highlights the strategic role of engine MRO services in keeping global aircraft fleets safe, compliant, and operationally ready. 

One of the foremost industry challenges in aircraft engine MRO is the ongoing strain on maintenance capacity. Turnaround times for engine overhauls have increased significantly in recent years due to a shortage of skilled technicians, global supply chain disruptions, and rising demand for repairs — particularly for new-generation engines. A recent industry report noted that maintenance times for modern engines are substantially higher than historical averages, creating pressure on MRO providers to scale capacity without compromising quality. 

Another major challenge is the availability of spare parts and components. Supply chain bottlenecks — amplified by global economic uncertainties and production delays — have constrained parts availability, prolonging engine downtimes and increasing operational costs. These constraints have compelled some airlines to retain older aircraft longer or to dismantle retired planes for usable parts, indicating broader market pressures associated with engine MRO dynamics. 

Technological innovation presents a significant market opportunity. Predictive maintenance — using data analytics and IoT sensors — allows for engine health monitoring that can pre-empt failures before they occur. This reduces unscheduled downtime, improves safety, and optimizes operational planning. The adoption of these technologies is particularly attractive as airlines seek ways to reduce costs and improve reliability, thereby intensifying demand for advanced MRO services. 

The Aircraft Engine MRO Market is also shaped by the expanding global fleet. Commercial aircraft orders and deliveries have increased steadily, especially in emerging regions like Asia-Pacific and the Middle East. A larger fleet naturally drives the need for engine maintenance and overhaul activities, while military aircraft operations continue to require specialized MRO services. This dual demand — commercial and defense — strengthens the market’s resilience and diversifies revenue sources. 

Sustainability and environmental compliance are influencing how engine MRO providers operate. Airlines are under pressure to meet emission reduction targets, and engine maintenance practices must adapt to these demands. MRO facilities are implementing greener processes, using eco-efficient materials, and reengineering workflows to minimize environmental impact — elements that are increasingly factored into procurement decisions and long-term strategic planning. 

The regional market outlook highlights North America as a dominant market due to its mature aviation infrastructure, high volume of airline operations, and early adoption of advanced engine MRO services. Meanwhile, the Asia-Pacific region is emerging as a high-growth market, supported by expanding air travel, investments in aviation infrastructure, and increasing fleet sizes. These regional dynamics will be central to industry forecasts through 2035. 

In conclusion, while the aircraft engine MRO market faces challenges related to capacity, supply chains, and skilled labor shortages, substantial growth opportunities exist through technology integration, regional expansion, and enhanced aftermarket services. As airlines and operators navigate an increasingly complex aviation landscape, engine MRO services will remain essential to ensuring operational efficiency and safety.