A FOKKER 100 RETURNED TO THE FIELD DUE TO ACFT LOGBOOK NOT BOARDED AND OPEN REQUIRED INSPECTION ITEM NOT ACCOMPLISHED ON NOSE GEAR CHANGE.

Narrative

WHILE ON A FIELD TRIP TO ZZZ TO CHANGE THE NOSE GEAR ON XYZ; I SIGNED FOR VERIFICATION OF CORRECT INSTALLATION IN THE REQUIRED INSPECTION ITEM BLOCKS OF THE LOGBOOK. DUE TO NOT BEING THOROUGHLY FAMILIAR WITH THE MAINT MANUAL'S PROCS CONCERNING REQUIRED INSPECTION ITEMS; I WAS UNDER THE IMPRESSION THAT THEY COULD BE SIGNED FOR BY A CREW CHIEF AT A LINE STATION. I WAS NOT AWARE THAT THE CREW CHIEFS HAD TO HAVE HAD REQUIRED INSPECTION ITEM TRAINING TO LEGALLY ACCOMPLISH BUYBACKS AND ASSUMED IT TO BE LIKE A BACKCHK SIT. ON JAN/XA/00 I WAS MADE AWARE OF MY MISTAKE. I IMMEDIATELY NOTIFIED MY MGR; ABC XXX. HE CONTACTED THE QUALITY ASSURANCE MGR AND HAD A TEMPORARY REQUIRED INSPECTION ITEM QUALIFICATION ISSUED TO ME. I WAS THEN SENT TO MEET THE ACFT AT THE GATE AT ZZZ AND MAKE AN ENTRY IN THE LOGBOOK VERIFYING THAT THE INSTALLATION; RIG; ETC; WAS ACCOMPLISHED PER THE PROCS SET FORTH IN MAINT MANUAL 32-21-01. UPON RETURN; IT WAS AGREED THAT A NON COMPLIANCE WOULD BE ISSUED IN THIS CASE; AND THAT IT WOULD BE ARRANGED FOR ME TO GO TO REQUIRED INSPECTION ITEM TRAINING.