DISPATCHER DOES A FAVOR FOR THE PIC OF A FK10 BY DECLARING AN EMER FOR HIM; WITHOUT HIS CONSENT; BECAUSE OF A 1 GENERATOR OP. RPTR STATES THAT HE WANTED CAPT TO OBTAIN PRIORITY TFC HANDLING FROM ATC.

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FLT XYZ ADVISED ME THAT HE HAD TO SHUT DOWN THE APU ON ACCOUNT OF AN OIL OVERTEMP INDICATION. THE #1 IDG (INTEGRATED DRIVE GENERATOR -- ENG DRIVEN #1 ENG) WAS ALREADY ON PLACARD. THIS MADE THE ACFT A 1 GENERATOR OP. THE CAPT INDICATED THAT HE WANTED TO CONTINUE TO XYZ; I TOLD HIM THAT THERE WAS A POSSIBILITY OF FOG IN XYZ BY VIRTUE OF NO TEMP/DEWPOINT SPREAD AND THAT SEVERAL OTHER ARPTS IN THE AREA WERE IN FOG. ALSO I INFORMED HIM THAT WE WERE ONE STEP AWAY FROM AN EMER WITH THE 1 GENERATOR CONDITION. WE THEN BROKE CONTACT. I BEGAN LOOKING AT THE ABNORMAL/EMER PROCS IN THE AFM. THE PROC ADVISED LNDG AT THE CLOSEST SUITABLE ARPT. I FINALLY RE-ESTABLISHED VERBAL COM AND CITED THE AFM PROC TO THE CAPT. HE AGREED HE SHOULD LAND. I ASKED THE CAPT OF HIS POS AND WHAT WAS THE CLOSEST USABLE ARPT; HE TOLD ME YYZ; YZZ. BOTH YYZ AND YZZ WERE IN VFR CONDITIONS. THE CAPT THEN REQUESTED WHERE THE NEAREST MAINT BASE WAS TO GET THE ACFT REPAIRED; AND I TOLD HIM EITHER AAA OR BBB. HE ELECTED TO PROCEED TO BBB; AND WE BROKE COMS AGAIN. I THEN DECIDED TO DECLARE AN EMER WITH DDD; BECAUSE OF THE CAPT'S DECISION TO OVERFLY OTHER ARPTS THAT WERE USABLE. I WANTED TO PROVIDE HIM WITH PRIORITY HANDLING. I SENT THE FLT AN ACARS MESSAGE THAT I HAD DECLARED AN EMER WITH ATC. THE ACFT PROCEEDED ONTO BBB AND LANDED WITHOUT INCIDENT.