Pontifications Archives - Leeham News and Analysis

Scott Hamilton's June 9, 2026 Pontifications column at Leeham News draws a pointed parallel between the automotive industry's newly discovered pivot toward service and aftermarket revenue and the business model commercial aviation engine manufacturers perfected over decades. Citing a Wall Street Journal report on rising vehicle prices, aging fleets now averaging 13 years on the road, and automakers redirecting investment toward used-car sales, parts, and dealership repair operations, Hamilton observes that aerospace OEMs—CFM International, GE Aerospace, Pratt & Whitney, Rolls-Royce, and International Aero Engines—arrived at these same conclusions long before Detroit. The core logic is identical in both industries: when capital costs for new hardware become prohibitive for buyers, manufacturers must monetize the installed base through long-term service relationships rather than unit sales alone.

For working airline and corporate flight department operators, this dynamic is not abstract. The engine OEM service model—power-by-the-hour agreements, long-term service agreements (LTSAs), and exclusive MRO arrangements—has been the dominant financial architecture governing turbofan operations for at least two decades. Programs like CFM's branded service agreements for the CFM56 and LEAP families, Rolls-Royce's TotalCare, and Pratt & Whitney's Fleet Management Programs have progressively shifted maintenance cost from unpredictable capital events to predictable per-cycle or per-flight-hour expenses. This structure benefits operators on cash flow planning but simultaneously concentrates pricing power and parts supply in the hands of OEMs. The recent Pratt & Whitney GTF powder metal disk recall—which grounded or constrained hundreds of A320neo-family aircraft globally—illustrated exactly what operator vulnerability looks like when locked into a single-source service ecosystem during a supply chain disruption.

Hamilton's framing also resonates with fleet strategy pressures across commercial, charter, and business aviation. Narrowbody operators globally are flying CFM56-powered 737 Classics and CFM56/V2500-powered A320ceo aircraft well into their second and third decades of service, driven by the same economic calculus the WSJ described for car owners: the fuel efficiency gains of a new-technology aircraft do not always offset the capital cost and transition expense of a fleet renewal when existing hardware is serviceably maintained. For Part 91 and Part 135 operators in the business jet segment, aging large-cabin aircraft equipped with mature engine platforms face similar arithmetic—heavy inspection costs climb with airframe cycles and calendar time, yet the acquisition cost of replacement aircraft, combined with current interest rates, makes retention of older hardware financially rational well past traditional replacement thresholds.

The broader structural trend Hamilton identifies—industries discovering service revenue only after unit sales economics deteriorate—has particular significance during a period when Boeing's production difficulties have constrained new narrowbody deliveries, Airbus backlogs extend a decade forward, and business jet manufacturers face multi-year order queues. Scarcity of new aircraft supply is itself extending the average age of operating fleets in ways that amplify every operator's dependence on MRO networks and OEM service organizations. For aviation professionals, Hamilton's column serves as a reminder that the financial architecture now being adopted by Ford and GM dealers was engineered into the airline industry's cost structure by Toulouse and Cincinnati long before anyone in Detroit thought to ask whether a service shop could replace a showroom floor.