An unspecified number of V-22 Ospreys will be grounded to address a hard clutch engagement issue until the component linked to the engine is replaced. The problem was first brought to light in summer 2022. The fault lies in the input quill assembly that connects the Osprey's engine to the proprotor gear box. On Saturday, the V-22 Joint Program Office announced the grounding after data analytics showed the link of fault between the age of input quill assemblies and hard clutch engagement.
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