Then the sound of helicopter blades beating the air reached him.

In the distance, I could hear helicopter blades beating the night air.

The thumping of the helicopter blades above us was loud.

The roar of helicopter blades would drown out his voice.

A few minutes later they heard the steady rhythm of helicopter blades approaching.

Shea ducked down and walked out from under the helicopter blade.

Behind us I heard the helicopter blades chug to a halt.

Almost at that moment he caught the glint of helicopter blades, and realised it was now or never.

"None," he answered, half shouting to be heard above the pounding of helicopter blades.

I said to Anderson over loud blowing air and rotating helicopter blades.

My life was hanging not by helicopter blades but by a thread.

The helicopter blades began to hum again, to turn with a clattering roar.

About ten minutes later, I heard this vaguely familiar sound and recognized it as helicopter blades beating the air.

Assorted bad guys meet death by more gruesome means, including whirling helicopter blades.

The helicopter blade beating, sending out currents of air across the alfalfa field behind the hospital.

Rescuers behind Rayford cleared the area when they heard helicopter blades.

She was taking too many chances near the whirling helicopter blades - not to mention the guns.

A few moments later Tret'yak heard the rhythmic beating of helicopter blades.

It grew rapidly in brilliance, and soon I heard the thumping of helicopter blades.

The guys in sunglasses watching you, the helicopter blades whirring above you?

Static Rollover is a rolling action when the helicopter blades are not in rotation.

As the helicopter blades slowed, the top of the sun broke over the horizon, giving the sky a golden glow.

I do not expect an object with the weight and density could be "sucked up" by the helicopter blades while taking off or landing.

A chip that rotates along the axis it is connected to, like a helicopter blade.

As the two men crossed the grassy rise, the beating of helicopter blades became audible to the west.