Where can I find information on the DC-9's turn radius in flight? Does anyone know where I can find information on a DC-9-30's turn radius at various altitudes and airspeeds?  I've tried Googling it, but all I've found is information about its turn radius while taxiing.
No different from any other jet.  Use this turn radius calculator http://www.csgnetwork.com/aircraftturninfocalc.html