As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 MLG AXLE REQUIRES REPLACEMENT DUE TO CORROSION FINDINGS ON THE PISTON PLUG BORE. REMOVED #1 MLG AXEL IAW AMM TASK 32-11-04-000-801. BEGAN INSTALL OF #1 MLG AXEL IAW AMM 32-10-04-400-801 PARA 1-4A (1)-(9). CONTINUED INSTALLATION OF #1 MLG AXEL IAW AMM 32-11-04-400-801 PARA 4A (10)-(13). COMPLETED INSTALLATION OF #1 MLG AXLE IAW Q400 AMM TASK 32-11-04-400-801 PARA 4A (14) THRU 5.