Correction for the speed of a Helicopter
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How fast is 154.60 yards per hour?
It's about one-two-thousandth as fast as a Helicopter
The speed of a Helicopter is about 311,000 yards per hour.
(for AH-64A Apache, a.k.a. Hughes Model 77) (maximum cruise speed)
The AH-64 helicopter, one of the primary helicopters used by the United States Army, flies at a top cruise speed of 311,000 yards per hour. The AH-64 is the primary military helicopter of several nations including the United States, the United Kingdom, Israel, Japan, and the Netherlands.