The families of four Marines killed in a 2022 Osprey crash have filed a lawsuit against the aircraft's manufacturers, Bell Textron, Boeing, and Rolls-Royce. They allege the companies failed to disclose safety issues and that design flaws led to the crash. The lawsuit focuses on a recurring problem with the Osprey's clutch system, which can cause a sudden loss of lift. Investigators believe this issue contributed to the California crash, but the families also suspect a problem with the Interconnect Drive System (ICDS) played a role. The lawsuit comes after a series of deadly Osprey crashes in 2022 and 2023. The military grounded the entire fleet after a crash in Japan, but the cause of that incident remains under investigation. The families involved say they're seeking answers and want to prevent future tragedies.