A B757-200 WITH NEWLY INSTALLED L ENG WAS FOUND WITH LEAKING IDG. UNIT REPLACED. ACFT WAS RELEASED FROM VERIFICATION ETOPS FLT. LATER FOUND ETOPS 60 MIN FLT REQUIRED.

Narrative

ON JUN/XA/06; ZZZ MAINT CALLED AND ASKED THE MAINT OPS IF ACR X REQUIRED A FUNCTIONAL CHK FLT NON-ETOPS VERIFICATION FLT/6060 FL RESTR MESSAGE. THE REASON THEY ASKED IS ZZZ MAINT HAD JUST REPLACED THE L ENG IDG FOR LEAKING. I ASKED ZZZ MAINT IF THEY HAD DONE ANY WORK ON THE R ENG AND THEY SAID NO. WITH THIS INFO I TOLD THEM NO FUNCTIONAL CHK FLT/NON-ETOPS VERIFICATION FLT/6060 FLT RESTR MESSAGE WAS REQUIRED. WHAT I FAILED TO REALIZE WAS THE ACFT HAD PREVIOUSLY BEEN OTS FOR A SCHEDULED L-HAND ENG CHANGE AND THE ACFT HAD NOT FLOWN SINCE THE ENG CHANGE. I HAD JUST RETURNED BACK TO WORK AFTER 2 DAYS OFF AND THE ACFT WAS RETURNED TO SVC AT XA45 ON JUN/XB/06. NOW THIS MORNING I HAVE BEEN INFORMED THAT THE FUNCTIONAL CHK FLT/NON-ETOPS VERIFICATION FLT/6060 FLT RESTR MESSAGE WAS REQUIRED. PER GPM THERE IS A NOTE THAT READS; 'A FUNCTIONAL CHK FLT IS REQUIRED ONLY IF THE NEWLY INSTALLED ENG DID NOT RECEIVE A TEST CELL CERTIFICATION RUN; OR IF A CRITICAL COMPONENT HAS BEEN REPLACED ON AN ENG AFTER IT HAS RECEIVED A TEST CELL RUN.' NOT REALIZING THE ACFT HAD BEEN OTS FOR AN ENG CHANGE AND ZZZ MAINT NOT REMINDING ME OF THIS; I INACCURATELY INFORMED ZZZ MAINT AND WAS NOT IN COMPLIANCE WITH THE GPM. THE ACFT DEPARTED ZZZ ON FLT TO ZZZ1 WITHOUT A LOGBOOK ENTRY RELEASING THE ACFT TO EXTENDED TWIN OP SVC FOR VERIFICATION FLT REQUIREMENTS FOR ACFT UTILIZED IN ETOPS OP. THE FIRST 60 MINS OF THE FLT MUST BE WITHIN 60 MINS OF A SUITABLE LNDG ARPT DUE TO REPAIR OF THE L-HAND IDG ON A NEWLY INSTALLED TEST CELL RAN ENG. NOTE: I DID FOLLOW UP WITH OPS AND THEY TELL ME THE ACFT DID DEPART ON A ROUTING THAT IT WAS WITHIN 60 MINS OF A SUITABLE LNDG SPOT FOR THE FIRST 60 MINS OF THE FLT. REVIEWED GPM SECTION AND LOOKED FOR RECENT ENG CHANGE WHEN APCHED ABOUT IF A 60/60 MESSAGE IS REQUIRED.