TECHNICIAN REPORTS ON HIS CARRIER'S MAINT CONTROL MISINFORMING AN MD80 CONTRACT MECHANIC TO MANUFACTURE A FLT CONTROL POSITION INDICATOR; UNDER THE HEADING OF 'DECAL' INSTEAD OF 'NAMEPLATE;' AS NOTED IN THE IPC.

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IMPROPER INFO GIVEN VIA PHONE TO GET AIRPLANE OUT OF NON MAINT BASE. PART NOT AVAILABLE. GPM MISUSED AND PRESENTED WRONG TO MOVE ACFT OUT OF TOWN; PARTS MISNAMED TO FALL INTO GPM CATEGORY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: REPORTER STATED THE USE OF NOMENCLATURE; OR SPECIFIC TERMINOLOGY; TO NAME A PART; DRIVES WHAT CAN BE MANUFACTURED LOCALLY PER THEIR GENERAL MAINT MANUAL. REPORTER STATED HE COULDN'T REMEMBER WHETHER THE RUDDER OR AILERON TRIM DEGREE POSITION INDICATOR WAS MISSING. BUT; EITHER INDICATOR IS CALLED A 'NAMEPLATE' IN THE IPC; NOT A 'DECAL.' THE GENERAL MANUAL DID NOT COVER NAMEPLATE; AND THE MISSING PART WAS NOT CONSIDERED A DECAL. REPORTER STATED THE ACFT WAS AT A NON-MAINT STATION; AND MAINT CONTROL TOLD THE CONTRACT MAINT MECHANIC THE MISSING PART WAS A DECAL. THE CONTRACT MAINT MECHANIC FABRICATED A LOCAL REPAIR FOR THE POSITION TRIM INDICATOR ON THE CENTER PEDESTAL AND SIGNED-OFF THE WRITE-UP AS A SERVICEABLE REPAIR. REPORTER ALSO STATED THE ACFT THEN FLEW A REVENUE FLIGHT; FROM THE CONTRACT MAINT PROVIDER'S STATION TO HIS STATION AND WAS IMMEDIATELY GROUNDED BY MAINT CONTROL; STATING THE ACFT REQUIRED A 'NAMEPLATE' POSITION INDICATOR AND MUST BE INSTALLED PRIOR TO FURTHER FLIGHT. REPORTER STATED HE FEELS THE CONTRACT MAINT MECHANIC WHO SIGNED-OFF THE WRITE-UP WAS SET-UP AND UNKNOWINGLY RELEASED AN ACFT THAT WAS NOT LEGAL.