As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE REMOVED DUE TO METAL IN OIL. UPON INSPECTION OF GEARBOX PARTS NOTED THE FOLLOWING: BELOW CEB1307 REQUIREMENTS ON TUBE ASSEMBLY. INSTALLED NEW TUBE ASSY. PART RETURNED TO ALLISON FOR CEB1307. REFERENCE: AFA#24405A (PART IS OUT OF CALENDAR DATE AND TIME LIMITS)