Business · 12/12/2011Updated: 10/17/2026 · 1 min read

Pratt & Whitney Corp. Issues Airworthiness Directive for JT9D-7R4H1 Turbofan Engines

Pratt & Whitney Corp. has issued a new airworthiness directive for all JT9D-7R4H1 turbofan engines due to reports of cracks in high-pressure compressor shafts, requiring removal of affected parts and a new life limit.

Original source language: Federal Register — Transportation DepartmentOpen original release →

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