An incident in which a helicopter’s rotor blades hit a rock ledge, leaving the severely damaged aircraft stranded near Kakadu National Park last week, is being investigated by the Australian Transport Safety Bureau.

The aviation safety watchdog said it received reports of a damaged Squirrel helicopter left stranded at Kubara, the end tip of a four-hour hike that starts nine kms from the Burrungkuy, Nourlangie carpark.

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