As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE CARRYING OUT MAINTENANCE ON AN ENGINE THE INSPECTION OF THE REDUCTION GEARBOX CHIP DETECTOR REQUIRED THE REPLACEMENT OF AN O-RING. IN DRAWING THE O-RING FROM STORES THE AME NOTED THE SIZE OF THE NEW O-RING WAS NOT THE SAME AS THAT OF THE ONE REMOVED. AS OTHER O-RINGS WERE INSPECTED IT APPEARS THAT THIS IS AN ISOLATED CASE.