The Problem with Pratt & Whitney’s PW1100G Engines on the A320neo Family – Cranky Flier

Pratt had discovered an issue with contaminated powdered metal used in manufacturing between Q4 2015 and and Q3 2021 that could cause cracking in the stage 1 and stage 2 disks in the high pressure turbine. These obviously must be inspected at certain intervals to ensure there is no actual problem.

https://crankyflier.com/2023/09/26/the-problem-with-pratt-whitneys-pw1100g-engines-on-the-a320neo-family/