What was found
(CAN) DURING CRUISE PILOT NOTICED LT ENGINE NG SLOWLY INCREASING. PILOT INCREASED THROTTLE TO COMPENSATE.STABILIZED AT ONE THROTTLE KNOB FORWARD OF RT THROTTLE. LANDED WITH NO FURTHER INCIDENT. FCU REMOVED FOR REPLACEMENT (NO OTHER DISCREPANCIES FOUND). FOUND DRIVE END BEARING COMING APART. REPLACED FCU. RUNUP NORMAL. AFTER NEXT FLT REINSPECTED. FOUND SLIGHT FUEL LEAK AT PUMP DRAIN. PUMP REPLACED.