Pratt & Whitney is reverting to a previous configuration of its PW1100G geared turbofan (GTF) engine’s high pressure compressor (HPC) aft hub knife-edge seal to get its production line moving again and fix in-service engines affected by issues with the modified design. Pratt on Feb. 21 issued a statement saying it “released a revised configuration” to correct the A320neo-family engine’s latest issues “based on a design with which the company ...

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