GE Aerospace Archives - Leeham News and Analysis

CFM International's LEAP engine program has reached a significant durability milestone, with GE Aerospace confirming that engines shipping in 2026 are now expected to match the on-wing longevity of the CFM56 — a benchmark that was originally promised when the LEAP entered competition against the Pratt & Whitney GTF back in 2010. That promise went unfulfilled for nearly a decade. Both the LEAP and the GTF entered service in the 2015–2017 timeframe with durability well below projections, meaning parts degraded and failed faster than anticipated, eroding much of the double-digit fuel burn savings each engine was designed to deliver. For operators of 737 MAX and A320neo family aircraft — the two most widely flown narrowbody platforms in commercial and charter aviation — this confirmation matters directly to dispatch reliability, maintenance planning horizons, and the fundamental economics of operating those fleets.

The human cost of that durability gap has been most visible on the GTF side, where Pratt & Whitney's powder metal contamination issue and broader durability shortfalls grounded upward of 700 A320neo-family aircraft at peak, along with scores of Airbus A220s and a number of Embraer E195-E2s. CFM's problems, while less acute in terms of AOG volume, still produced premature engine removals and meaningful unscheduled maintenance events across LEAP-powered fleets worldwide. Airlines, lessors, and MRO providers absorbed costs that in some cases significantly offset the fuel savings that had driven the new-technology engine purchase decisions in the first place. The acknowledgment by GE Aerospace that current production engines have finally achieved parity with the CFM56's durability record signals that the early-service learning curve — and its associated financial drag — may be nearing its end for LEAP operators.

Complementing the durability news, GE Aerospace has also introduced a foam-based engine wash system designed to combat the performance degradation that accumulates in normal, harsh, and extreme operating environments. The foam wash, which takes approximately four hours per narrowbody engine cycle on the LEAP-1A and roughly eight hours for widebody applications, replaces traditional water-wash processes that date to the early 1980s. Scheduled at intervals of approximately 250 to 500 cycles for active maintenance programs, the system is currently certified for five engine types including the CF34, LEAP, GE90, GEnx, and the Engine Alliance GP7200. For operators with aircraft regularly cycling through dusty Middle Eastern hubs, high-particulate environments in South Asia, or volcanic ash corridors in the Pacific, the foam wash represents a meaningful addition to the MRO toolkit — one that could extend time on wing, reduce fuel burn degradation, and lower shop visit frequency. GE has signaled the underlying technology may eventually be adapted for smaller business jet engines, which would extend its relevance to Part 91 and Part 135 turbofan operators.

The broader Leeham coverage also surfaces a persistent structural threat underlying all of these technical advancements: the aviation and aerospace workforce shortage. Leeham contributor Kathryn B. Creedy's two-part analysis documents a 40-year pattern of industry hand-wringing, government studies, and accountability failures that have left the pilot, technician, and engineering pipeline chronically undersupplied. The 2022 Congressionally mandated Youth Access to American Jobs in Aviation Task Force report — itself largely a reiteration of recommendations made in reports more than two decades prior — has produced no meaningful policy action in the four years since its release. For working pilots and operators, the downstream consequences are direct: MRO labor constraints affect turnaround times for engine maintenance events like those described in the LEAP durability story; pilot hiring pipelines remain tight even as fleet operators plan expansion around improved engine economics; and the structural capacity of the industry to train, certify, and retain qualified workers remains misaligned with projected demand.

Together, these developments frame a defining tension in commercial and business aviation circa 2026: the hardware is improving, with LEAP engines finally delivering on their original durability promise and new maintenance technologies like foam washing offering tangible operational benefits, but the human infrastructure required to sustain and scale these gains continues to lag. For professional flight crews and corporate flight departments, improved engine reliability translates to more predictable dispatch rates and fewer AOG disruptions — real operational wins. But the workforce shortage constraining MRO capacity, staffing engine shops, and filling cockpits means that even technically mature, well-supported engine platforms face headwinds in execution. The industry's ability to capture the full value of its engineering advances will remain contingent on solving the labor equation that decades of reports have failed to address.