Pilot's Operating Handbook Supplement, Cessna Avionics Operation Guide is in good condition.  ARC 7010394-2 October 1977 superceding ARC 7010394-1 July 1976.

This Manual was prepared by Aircraft Radio and Control (ARC) Division of Cessna Aircraft Company to familiarize the owner of avionics equipment with the basic application techniques for flight. The information in the manual is intended for guidance only.