40 percent increase in helicopter sales expected

If engine-maker Honeywell is correct, you'll be hearing the sound of rotors more often as helicopter sales increase.

According to Aviation Week, Honeywell is forecasting a 40 percent increase in helicopter deliveries over the next five years. Honeywell predicts 6,000 new helicopters will be needed between now and 2016

There was jump in helicopter sales by 9 percent in 2006 alone.

The demand for new helicopters ranges from business travelers, medical services, and law enforcement, with customers ranging from the United States to Africa and Asia.