What was found
(CAN) AN OIL LEAK APPEARING TO BE ORIGINATED FROM BRAIDED STEEL TRANSMISSION RETURN LINE FROM THE FREEWHEELING UNIT. CLOSER INSPECTION REVEALED THAT ADJACENT ALUMINUM TUBE WAS CHAFED. VERIFIED PROPER CLAMPING OF THE AFFECTED PARTS, NO FAULT WAS FOUND. APPARENTLY THE STEEL BRAIDED HOSE CHAFED AGAINST THE TUBE DURING MAXIMUM (100%) TORQUE OPERATION, ALTHOUGH THERE SEEMED TO BE SUFFICIENT CLEARANCE DURING FLAT PITCH OPERATION ON THE GROUND. TUBE REPLACED. A/C RETURNED TO SERVICE.