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RESTRICTED TECHNICAL ORDER No. 02-35GC-1 HANDBOOK OF OPERATION INSTRUCTIONS FOR THE Model R-1820-65 Engine and Associated Models [[image - wings insignia with a propeller attached]] NOTE: This Technical Order replaces T.O. No. 02-35GC-1 dated April 10, 1942. These instructions are to be used for flight purposes only when the Pilot's Handbook of Operating Instructions is not available. Consult T.O. No. 00-1. NOTICE: This document contains information affecting the National Defense of the United States within the meaning of the Espionage Act (U.S.C. 50:31:32). The transmission of this document or the revelation of its contents in any manner to an unauthorized person is prohibited. PUBLISHED BY AUTHORITY OF THE COMMANDING GENERAL, ARMY AIR FORCES, BY THE HEADQUARTERS, FIELD SERVICES, AIR SERVICE COMMAND, PATTERSON FIELD, FAIRFIELD, OHIO R. & R. DAYTON - 12-11-42-6M October 10, 1942