Okinawa residents on Saturday demanded that all of the U.S. military's Ospreys in Japan be grounded in the wake of last week's fatal crash involving one of the tilt-rotor transports off Australia.

"It is clear that the Osprey is an extremely dangerous and defective aircraft," said a resolution issued at a gathering in Naha, the prefectural capital. Organizers say the rally drew 45,000 people.

The crash of the MV-22 Osprey has reignited concerns about the its safety.