09 HRS/MSC - ENC S8 73-0159 NO. 1 ENGINE - ENGINE FUEL AND CONTROL- ELECTRONIC CONTROL UNIT (73-21-60) - INTRODUCTION OF FADEC3 ECU/EEC WITH NEW MAIN CHANNEL BOARD. SERVICE BULLETIN MOS 09-DEC-2009 HRS/MSC - ENC S8 73-016 R2 NO. 1 ENGINE - ENGINE FUEL AND CONTROL - HYDROMECHANICAL UNIT (73-00-00)- SCHEDULE