the helicopter move is illegal in high school cheerleading
From: AACCA: American Association of Cheerleading Coaches and Administrators -
http://www.aacca.org/hssafety.asp
Helicopter Toss - A stunt in which the top person is tossed into the air and rotates more than 180 degrees parallel to the ground in the same motion as a helicopter blade.
(they just changed it to 180 degrees, probably from 360 degrees)
W. Helicopter tosses are prohibited.
So is cheerleading with a cast:
K. Supports, braces, etc., which are hard and unyielding or have rough edges or surfaces must be appropriately covered. A participant wearing a cast (excluding a properly covered air cast) shall not be involved in a stunts, pyramids, tosses or tumbling.
(new rule for 2006-2007)
helicopter move is also illegal in all-star cheerleading:
From USASF: U.S. All Star Federation for Cheer & Dance Teams -
https://secure.usasf.net/frmDefault.aspx?cn=0708Rules.htm#General_Safety_Guidelines_
C. Helicopters are not allowed.
And college:
http://www.aacca.org/collegesafety.asp
they define the helipcopter toss as:
Helicopter Toss