What was found
(CAN) PROPELLER REMOVED FROM AIRCRAFT AND SENT TO REPAIR FACILITY. PROPELLER DISMANTLED FOR INVESTIGATION OF RED DYE OIL LEAK. LEAK FOUND TO BE FROM AFT BETA ROD TO HUB SEAL. PROPELLER REASSEMBLED AND PRESSURE TESTED. PROPELLER REINSTALLED ON AIRCRAFT AND RETURNED TO SERVICE. LEAK AT SEAL DUE TO CONTAMINATION BY OEM COATING ON SEAL. MCCAULEY HAS RECOMMENDED THE SEALS BE SOAKED IN TURBINE OIL PRIOR TO ASSEMBLY, TO REMOVE THE TEFLON LIKE COATING. (TC# 20191002038)