What was found
LEAP-1A TGB REF 362-001-11X-0 ARE SUBJECT TO 2 SBS FOR MODIFICATION INTRODUCTION: SB 72-199: LINE 1 NEW STEEL BEARING SUPPORT INTRODUCED SB 72-337: LINE 1 PISTON RING INTRODUCTION.
DURING SB 72-337 INTRODUCTION, THE FITTER IDENTIFIED 3 WRONG BOLTS FITTED (BOLT AS3237-10 INSTEAD OF AS3237-12) ON THE L2 BEARING SUPPORT.
FIRST INVESTIGATIONS: THIS TGBS WAS MODIFIED ACCORDING TO SB 72-199 BY SAFRAN TS IN JULY 2019.
WORK PACKAGE FILE WAS REVIEWED, AND A MISTAKE OCCURRED DURING L2 BEARING SUPPORT RE-ASSEMBLY (3 BOLTS AS3237-10 INSTALLED INSTEAD OF AS3237-12). ITEM LOCATION ERROR IDENTIFIED ON BOLTS TAGS (MANUALLY RECORDED).
THIS TGB WAS STRIPPED AND RE-ASSEMBLED BY 2 NEWLY QUALIFIED FITTERS.