Are Airlines Nearing the End of GTF Grounding Turbulence?

Nearly three years after Pratt & Whitney disclosed a manufacturing defect affecting hundreds of geared turbofan engines, airlines are seeing signs of stabilization, yet industry data and corporate filings suggest that the period of intense disruption from GTF-related groundings is easing only gradually rather than ending outright.

From Peak Disruption to a Slower Descent

The current phase of the GTF crisis traces back to 2023, when Pratt & Whitney identified a rare condition in powder metal used in certain parts for PW1100G engines that power Airbus A320neo-family jets. The discovery triggered an accelerated inspection and removal program that rippled through airline schedules worldwide as engines were pulled from service earlier and more frequently than planned.

Publicly available information from RTX, Pratt & Whitney’s parent company, indicates that the inspection-driven removals led to a sharp rise in aircraft on ground, especially through 2024. Corporate presentations and regulatory filings outlined a fleet-management plan anticipating 600 to 700 additional shop visits between 2023 and 2026, with aircraft-on-ground levels peaking in the first half of 2024 before gradually subsiding.

Industry analysis suggests that, as of mid-2026, the worst of that initial shock has passed. Aviation data cited in specialist publications shows groundings starting to trend downward in 2025 and into 2026, reflecting engines returning from lengthy shop visits and improved throughput at maintenance facilities. However, that moderation is relative, and the overall level of disruption remains well above pre-crisis norms.

In other words, airlines appear to be moving off the crisis peak, but the descent toward normal operating conditions is proving long and uneven, with individual carriers experiencing very different levels of strain depending on fleet mix and regional demand.

Elevated Groundings Likely Through 2026

Recent regulatory disclosures by RTX continue to frame the GTF situation as a multi-year challenge rather than an imminent resolution. A mid-2026 quarterly filing reiterates that aircraft-on-ground levels for PW1100G-powered A320neo fleets are expected to remain elevated through the end of 2026, owing to both the powder-metal inspections and broader durability issues within the engine family.

Earlier guidance from 2023 and 2024 pointed to an average of several hundred aircraft affected globally at any given time during the 2024 to 2026 window. Even as shop capacity expands and turnaround times improve, the need for repeated inspections and part replacements keeps a structural share of the fleet sidelined. Airlines that had anticipated a rapid rebound in available capacity are instead planning around a slow normalization.

Analysts note that this lingering impact is especially pronounced at carriers with large A320neo fleets that initially selected the GTF as their primary engine option. Some airlines have responded by deferring growth plans, while others have accelerated the shift of future deliveries to rival powerplants. Yet the obligation to cycle through existing engines under mandatory inspection regimes means that the consequences of earlier choices will continue to be felt for several more seasons.

For passengers, the knock-on effect typically appears not as outright safety concerns but as reduced frequencies, tighter spare aircraft buffers, and limited capacity on popular routes, which can translate into higher fares during peak periods. That dynamic suggests that, while the mechanical crisis is being managed, its commercial aftershocks are still playing out.

Maintenance Capacity and the GTF Advantage Pivot

A key factor in the transition away from crisis footing is the build-out of maintenance, repair and overhaul capacity dedicated to GTF engines. Industry coverage in mid-2026 highlights how Pratt & Whitney has been adding and expanding MRO facilities and licensing third-party shops, with the goal of clearing the inspection backlog and improving engine turnaround times.

Investment in additional capacity appears to be narrowing some of the worst delays, which previously stretched close to or beyond 300 days for certain engines. As more facilities come online and supply-chain bottlenecks ease, airlines are reporting somewhat shorter out-of-service periods, helping them better align fleet availability with seasonal peaks.

At the same time, Pratt & Whitney is pivoting the narrative toward the GTF Advantage, the upgraded version of the engine for the A320neo family. The model secured type certification from regulators in the United States and Europe in 2025, with European validation followed by confirmation in 2026 that paves the way for wider entry into service. The company positions the Advantage as offering improved fuel burn and stronger performance while benefiting from lessons learned on durability.

However, the rollout of the GTF Advantage does not instantly erase the burden of legacy engines. Airlines will operate mixed fleets of earlier-generation GTFs and newer variants for years, and the older units must still pass through the inspection and retrofit pipeline. As a result, the new technology’s benefits in fuel efficiency and reliability will arrive gradually and unevenly across operators.

Airline Strategies: Diversification and Capacity Workarounds

On the airline side, strategies to cope with GTF constraints have grown more sophisticated over time. Several carriers with heavy GTF exposure have diversified their future narrowbody engine choices, shifting new aircraft orders toward the competing CFM Leap engine where contracts and relationships allow. Others are leaning more heavily on older but less affected fleets, including previous-generation A320ceo and Boeing 737 models, to maintain schedules.

Some operators have turned to short- and medium-term aircraft leases, including from lessors and other airlines, to plug gaps created by engines stuck in the shop. Publicly available fleet records show examples of carriers bringing in alternative aircraft types on lease to restore capacity on key routes while waiting for GTF-powered jets to return to service or be delivered.

These workarounds come at a cost. Leasing at short notice in a tight market can be expensive, operating multiple engine types complicates maintenance and training, and flying older jets often carries a fuel-burn penalty. Still, such measures have helped airlines reduce the visible impact of GTF groundings on passengers, even if profit margins and long-term efficiency goals are affected.

In markets where air travel demand has rebounded strongly, the persistence of GTF-related constraints may be quietly supporting higher yields. Industry observers note that constrained supply of narrowbody capacity, particularly in fast-growing regions, can underpin fares even when headline fleet numbers suggest robust growth.

Final Stretch or Prolonged Headwind?

Whether airlines are in the true final stretch of GTF grounding pain depends on how “final” is defined. The clearest peak in emergency-driven groundings appears to have passed, supported by reports of improving engine reliability, better parts flow, and expanding MRO capacity. In that sense, the most acute phase of the crisis is likely behind the industry.

Yet RTX’s own outlook, which continues to flag elevated aircraft-on-ground levels for PW1100G-powered A320neos through 2026, points to at least another year of noticeable operational drag. The formal inspection program, combined with the time required to retrofit or replace affected components, ensures that disruption will not vanish quickly.

Beyond that horizon, much depends on how the GTF Advantage and subsequent improvements perform in everyday airline operations. If the upgraded engines deliver the promised combination of efficiency and durability, the episode could ultimately be remembered as a painful transition toward more advanced technology. If issues persist, airlines may reassess their long-term engine-risk strategies even more aggressively.

For now, the industry appears to be shifting from emergency mode to long-haul management of a complex technical and logistical challenge. The runway to full recovery is visible, but it still stretches several seasons ahead before GTF-related groundings become a marginal rather than defining factor in airline planning.