What is the time on wing improvement for GEnx engines in harsh environments?

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GE Aerospace says it has more than doubled the GEnx time on wing in harsh environments after upgrades to turbine blades and combustor coating technology.
GE Aerospace stated that over the last decade it upgraded the GEnx engine high-pressure turbine blades and its combustor coating technology. It said these upgrades more than doubled the engine’s time on wing in harsh environments.
What GE Aerospace upgraded on the GEnx engine
GE Aerospace said the upgrades focused on two specific areas of the GEnx engine: the high-pressure turbine blades and the combustor coating technology. These changes were introduced over the last decade as part of improvements to the engine’s performance in difficult operating conditions.
How much the time on wing improved in harsh environments
GE Aerospace reported that the upgraded technology more than doubled the GEnx engine’s time on wing in harsh environments. The statement links the improvement directly to the turbine blade and combustor coating upgrades described above.
How the improvement relates to the engine’s operating record
The same announcement also cited broader in-service performance figures for the GEnx-1B engine, including reaching more than 50 million flight hours in just over 14 years. It also stated the engine has a 99.98% dispatch reliability rate and stays on-wing at a rate three times higher than competing engines.
Context for the “harsh environments” claim in the announcement
GE Aerospace described the flights powered by the GEnx as traversing some of the world’s harshest environments. Within that framing, it attributed the time-on-wing improvement specifically to the high-pressure turbine blade upgrades and combustor coating technology enhancements over the previous decade.

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What is the time on wing improvement for GEnx engines in harsh environments?

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