Related Clues:

• Turning part of machine
• Revolving arm of a machine
• Something mechanical dumping old pile of rocks by river
• Helicopter lifter
• Run engine with top off to see this?
• Mechanical turning part
• Blade that can swivel
• Revolutionary device for lifting a chopper
• Revolver taken from soldiers after climbing hill
• Turning part of a mechanism
• Turning component
• Such as turns to and fro
• Aerofoil
• Helicopter vane
• Revolving machinery