Despite that evidence, the blade had not been removed from service. The report also notes that since the incident, fleet-wide PW4000 inspections revealed nine more “confirmed cracked fan blades”.

The Federal Aviation Administration is requiring airlines to inspect and replace "air sealing ring" assemblies within Pratt & Whitney PW4000 low-pressure turbine [LPT] cases.

As demand for renewable energy grows, so does the need for more efficient, cost-effective, and sustainable wind turbine ...