As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MGB CHIP INDICATION AT START UP. PERFORMED INSPECION OF MAG PICK UP AND OIL FILTER AND FOUND SIGNIFICNT METAL. SENT CHIPS AND OIL FOR ANALYSIS. ZF TECHNICAL STAFF FOUND METAL TO BE FROM LOWER MAST BEARING SPINNING IN BORE. THEY RECOMENED MGB BE SENT IN FOR REPAIR. THEY NOTED THIS IS SOMETHING THEY’VE ONLY SEE 1-2 TIMES IN 20 YEARS.