PW1100 Stands Hit 95% Utilization as Fall Maintenance Peak Nears

PW1100 engine stands averaged 95% utilization through the first eight months of 2026, up from 72% across 2025, the highest level among the engine families tracked by EngineStands.com. The CFM56-5A/B is close behind at 93%, and its stand fleet has held at full capacity since May. Both figures point to the same consequence: operators entering the fall heavy-maintenance peak with little or no spare stand capacity.

EngineStands.com identifies the CFM56-5A/B stand as the hardest to source right now. "Stand demand for the powerhouse behind the Airbus A320ceo is outpacing every other engine family and the utilization across EngineStands.com fleet has held at full capacity since May," the company's reports state. They add: "The team is receiving record volumes of leasing and purchase enquiries as operators across the market compete for what limited capacity exists industry wide."

CFM56-5A/B utilization rose from 77% in 2025 to 93% this year. Half of the tracked stand fleet stayed at 100% utilization from January through August. Additional capacity reached full utilization in May and stayed there.

Why the summer lull never came

The pattern breaks with recent years. Utilization typically softens during peak flying season, when fewer engines enter planned maintenance. That happened across the wider portfolio in 2026. It did not happen for the CFM56-5A/B.

The reports attribute the shift to operators keeping aging aircraft in service longer than planned. "Airbus still carries several thousand A320neo-family aircraft in backlog, while single-aisle production is ramping from the mid-50s toward the low 60s per month during 2026, against a target of 75 per month in 2027," the reports state. Slower fleet renewal keeps more CFM56-5B-powered A320ceo aircraft flying, and each additional flying year sustains the maintenance requirement around them.

What does this change for MRO planning? It removes the seasonal buffer. Shops that counted on summer stand releases to rebuild inventory found none.

How the A320neo fleet drove PW1100 demand

The PW1100 story runs on fleet growth rather than fleet age. Bookings began climbing in September 2025 and have kept pace since. Almost all PW1100 stands were at, or had reached, full utilization by spring and remained there through August.

"The pressure comes as the GTF installed base continues to expand. RTX booked more than 800 GTF orders in the first half of 2026, taking the program above 14,000 cumulative orders from more than 90 customers, with roughly 8,000 engines still in backlog," the reports state. RTX has also reported that PW1100-related aircraft groundings have fallen from their 2025 peak as MRO output increases.

The reports add a caveat that matters for planners: stand demand and stand-days can stay high even as MRO throughput rises, because more engines are moving simultaneously through removal, transport, inspection, repair and overhaul. Faster shop output does not automatically free stands.

Where other narrowbody platforms stand

Demand across other platforms is splitting rather than converging:

• CFM56-7B (737NG): the first annual utilization decline on record, a break from previous years when 7B demand rose in line with 5A/B. Boeing achieved approximately 500 B737 deliveries in 2026, with deliveries running ahead of the previous-year pace through May. Faster fleet transition may be giving operators more flexibility to retire 737NGs than A320ceos.
• LEAP-1A: utilization averaging around 70% year to date, down from 95% in 2025.
• LEAP-1B: also running below last year's level. Exact maintenance demand is still being determined because the installed base is young. CFM reported strong growth in LEAP deliveries in the first half of 2026, increasing the base that will require support in coming years. A larger share of shop-visit demand will arrive later as engines accumulate cycles and hours.

GE Aerospace's durability-upgrade rollout, introduced first on LEAP-1A with LEAP-1B enhancements following through 2026, will also shape that maintenance profile. The promise of lower future shop visits comes with a present-day cost: engines cycling through modification slots consume stand capacity now.

What MROs and repair shops can do

CFM56-5A/B and PW1100 stands are entering the new season already at or near full utilization. The next few months will show whether utilization rises for CFM56-7B, LEAP-1B and PW1500 stands as shop-visit volumes increase.

"Securing the shop slot is only one part of the equation. The engine, stand, tooling, documentation and transportation all need to align within the same window," said Ana Aleksejeva during a September EngineStands.com webinar. She added: "Earlier visibility into planned removals gives operators, lessors and MROs more room to adjust when schedules move."

The August reports also flag geography as a constraint, not just inventory. A stand may exist within a fleet and still be unavailable for a particular engine movement because it is committed elsewhere, undergoing inspection or positioned in another region. EngineStands.com maintains stand capacity in Amsterdam, Vilnius and Dubai and can reposition equipment as needs evolve.

"As the next maintenance season builds, the value is not simply in having stands available, but in having the right stand, in the right place, at the right time," the reports conclude. For fleets still flying mature CFM56 and growing PW1100 volumes, that alignment will decide whether fall shop visits stay on schedule.