FAA proposes AD for Pratt & Whitney GTF engines over HPC rotor-vane clashing

The FAA proposed an airworthiness directive for certain Pratt & Whitney GTF engines after six reports of HPC rotor-vane clashing, requiring initial and repetitive borescope inspections. The issue affects a subset of engines with a specific HPC module, potentially grounding or restricting aircraft if not addressed. This is a regulatory safety action with implications for airline operations and MRO demand.