North American operators will generate roughly a fifth of world engine maintenance demand over the decade from 2026 through 2035, amounting to $159 billion of an $848 billion global total, according to Aviation Week Network's 2026 Commercial Fleet and MRO Forecast. Engine work remains the single largest maintenance spending category across the aftermarket.

The wider forecast puts total aftermarket maintenance requirements above $1.6 trillion for the same period. Active in service commercial aircraft are projected to grow from more than 34,600 units in 2026 to 45,000 by 2035, a compound annual growth rate of 3%.

Regional shares are shifting. North America's portion of the world fleet is expected to fall to 23% in 2035 from 28% in 2026, as deliveries concentrate in faster growing markets. The dollar figure for North American engine work still rises across the period because newer powerplants carry higher shop visit costs and because the installed base continues to turn over.

Growth rates vary sharply by engine family. The CFM International Leap family, which powers Boeing 737 MAX and Airbus A320neo aircraft, is projected to expand at a 13% compound annual rate. The competing Pratt and Whitney geared turbofan, used on the A320neo family, the A220, and Embraer E2 jets, is forecast at 10%. Those two programs account for most of the increase in narrowbody engine shop visits over the decade, displacing volume that once flowed to CFM56 and V2500 lines.

Source: Aviation Week Network - https://aviationweek.com/awin-knowledge-center/data-how-much-will-engine-mro-demand-grow-north-america