A B767 ACR FLC HAD SMOKE IN THE COCKPIT AND AFTER GOING THROUGH THEIR CHKLIST AND DECLARING AN EMER TO LPPO THEY DIVERTED TO AN ALTERNATE ARPT. THE SMOKE WAS CAUSED BY AN ELECTRICAL SHORT IN THE RADAR DISPLAY IN THE COCKPIT.

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DURING CRUISE FLT AT FL350; POS N3907 W03820 THE FO AND MYSELF STARTED TO SMELL ELECTRICAL SMOKE. WE COULD NOT IMMEDIATELY DETERMINE ITS SOURCE. (THE CAPT WAS ON HIS BREAK; IN THE PAX CABIN.) I WENT TO FORWARD GALLEY TO ASK CABIN ATTENDANTS IF THEY SMELLED ANYTHING UNUSUAL. TOLD THEM TO GET CAPT. BACK IN COCKPIT THE SMELL WAS WORSE. DONNED OXYGEN MASKS. FO AND I COMPLETED ELECTRICAL SMOKE AND FIRE AND SMOKE REMOVAL EMER CHKLISTS. CAPT AND I SWITCHED SEATS AT THAT TIME AND FO STARTED TURN BACK TO LAJES; AZORES (LPLA/TER). ORIGINAL FLT (MAD-PHL). I CALLED SANTA MARIA OCEANIC CTL; DECLARED AN EMER; AND ADVISED OUR INTENTIONS. CONTACTED NEW YORK OCEANIC CTL FOR PHONE PATCH TO COMPANY DISPATCH. ADVISED OF SIT. THE CABIN ATTENDANTS WERE BRIEFED OF RETURN. AT THAT POINT SMOKE HAD DISSIPATED; BUT SMELL WAS BAD. LANDED IN LAJES AT XE30. NO EVAC REQUIRED. ACFT WAS INSPECTED BY LCL MECH FOR A FOREIGN ACR. APPROPRIATE INSPECTIONS FOR ETOPS AND OVERWT LNDG WERE PERFORMED. DUE TO DUTY TIME CONSTRAINTS BY THE TIME INSPECTIONS WERE COMPLETE WE OVERNIGHTED. ON NOV/XX/97 WE DEPARTED LPLA FOR KPHL AT XA20. WITH EVERYTHING THAT WENT ON; WE FORGOT TO SIGN LOGBOOK FOR MEL FOLLOW-UP ACTION FOR INOP R ENG INTEGRATED DRIVE GENERATOR. FOLLOW-UP ACTION WAS COMPLETED; THOUGH; PER MEL BOOK. REMAINDER OF FLT COMPLETED WITHOUT INCIDENT. SOME HUMAN FACTOR THOUGHTS. THIS WAS MY SECOND INFLT DIVERSION IN JUST OVER 1 MONTH FOR SMOKE IN COCKPIT. LAST TIME WE WERE 50 MI FROM CYHZ. THINGS HAPPENED FAST. WE WERE ON THE GND IN 14 MINS. THIS TIME IT WAS JUST OVER 1 HR. IT IS VERY STRESSFUL WITH SOME DENIAL THROWN IN. SOME PROCS ARE QUESTIONED OR NOT COMPLETED IN ENTIRETY (DSCNT TO 10000 FT ON SMOKE REMOVAL CHKLIST). IT IS JUST NOT AS SMOOTH AS IN THE SIMULATOR. WE NEVER THOUGHT ABOUT THE POSSIBILITY OF DITCHING EXCEPT AT ONE POINT WHEN PASSING NEAR THE ISLAND OF FLORES WE ASKED ABOUT THE ARPT THERE (4800 FT STRIP) 100 MI W OF LAJES. WE WOULD TRY THAT BEFORE PUTTING IT IN THE WATER. THE LEAD CABIN ATTENDANT NEVER CAME UP AND WENT OVER HIS CHKLIST (TEST) WITH CAPT. EMER SIT AT UNFAMILIAR ARPT; ARPT PERSONNEL NOT FAMILIAR WITH YOUR OP MAKES FOR A LONG DAY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR WAS THE INTL RELIEF OFFICER ON A B767-200 FLT FROM EUROPE TO PHL WHEN THE FLC DETECTED AN ELECTRICAL ODOR AND SMOKE IN THE COCKPIT. AFTER A BRIEF CHK TO SEE IF THE GALLEY COULD BE THE SOURCE; THEY DONNED OXYGEN MASKS AND STARTED THROUGH THE SMOKE AND FUMES CHKLIST WITHOUT BEING ABLE TO FIND THE SOURCE OF THE SMOKE. THE CAPT HAD BEEN NOTIFIED AND HE HAD RETURNED AND THE RPTR SAID THAT THE CAPT MADE AN IMMEDIATE DECISION TO DECLARE AN EMER AND TO DIVERT TO THE NEAREST SUITABLE ARPT. THE RPTR WAS TASKED WITH PLANNING THE DIVERT AND WITH PLOTTING GENERAL COURSES TO ALL AVAILABLE ARPTS IN THE AREA. THE LPPO CTLR SUGGESTED DIVERTING TO LAJ AND THE FLC USED THE FMS TO NAV DIRECTLY THERE. THE RPTR SAID THAT THE SUPPORT FROM ARTCC AND THE PERSONNEL AT LAJ WAS EXCELLENT. HE ALSO USED THE FMS TO PLOT AND UPDATE COURSES TO SMALLER ARPTS AND ISLANDS ALONG THE DIVERSION RTE IF; IN CASE AN ACTUAL FIRE STARTED; THEY HAD TO DITCH OR MAKE A LNDG AT AN UNSUITABLE ARPT. THE RPTR HAD RECENT PRACTICE IN THIS EXERCISE; HE SAID; BECAUSE HE HAD DIVERTED 1 MONTH AGO WHEN A FORWARD EQUIP COOLING FAN HAD FAILED AND CAUSED VIBRATION AND SMOKE IN THE ACFT. AFTER LNDG; THE MAINT TECHNICIANS FROM A FOREIGN FLAG CARRIER FOUND A SHORT IN THE ELECTRICAL CIRCUIT TO THE RADAR AND TCASII DISPLAY. THEY WERE ABLE TO REPAIR THE CIRCUIT IN A FEW HRS; BUT THE FLC WAS BY THIS TIME FORCED BY DUTY TIME CONSIDERATIONS TO REST OVERNIGHT. INCIDENTALLY; THE ACFT WAS ALREADY OPERATING UNDER MEL PROVISIONS WITH THE R ENG INTEGRATED DRIVE GENERATOR INOP; BUT THERE WERE NO PARTS AVAILABLE TO REPAIR THAT PROB. THE MEL ACTIONS TO CONTINUE WITHOUT THE INTEGRATED DRIVE GENERATOR WERE COMPLETED BY THE MAINT TECHNICIANS; BUT THE FLC FORGOT TO COMPLETE THE SIGNOFFS IN THE LOGBOOK. THE RPTR WAS CRITICAL OF THELEAD CABIN ATTENDANT WHO; APPARENTLY; DID NOT FUNCTION VERY WELL DURING THIS EMER. HE SAID THAT THE FLC WAS UNABLE TO GET THE LEAD TO COME TO THE COCKPIT OR TALK ABOUT THEIR PLANNING OR CHKLIST COORD.