FS2002 R4D-6 (DC-3) v4.75 Auto Pilot Upgrade. Self-installing patch that fits a new Sperry MKIII Autopilot to R4D-6 (DC-3) v4.75 (either R4D_2K2.ZIP or R4D 6th Edition CD). Fixes all autopilot irregularities caused by changes in the way FS2002 AP's function. See readme.txt prior to installation for an important note. Includes illustrated Autopilot Manual for the R4D-6 versions 3 through 4.75 by Bill Rambow. Upgrade by Roy Chaffin.