What was found
DURING INSPECTION OF PROPELLER, RED HUB OIL WAS FOUND LEAKING FROM THE BASES OF ALL 3 BLADES. THE INSIDE OF THE SPINNER AND SPINNER BULKHEAD ALSO HAD A NOTICEABLE AMOUNT OF RED OIL ON THEM. THE PROP WAS WASHED DOWN AND THE ENGINE RAN FOR 5 MINUTES AND SHUT DOWN. RED HUB OIL WAS STILL TO BE SEEN LEAKING FROM THE BLADE BASES. AMBIENT TEMPERATURES WERE IN THE ZERO TO MINUS 20 DEGREE FAHRENHEIT RANGE. SUBMITTER SUSPECTED THE SEAL MATERIAL IS FAILING WITH TIME IN SERVICE, AND EXPOSURE TO SUB-ZERO TEMPERATURES. PROPELLER WAS REPLACED. (X)