What was found
(CAN) ALTERNATOR REMOVED FROM AIRCRAFT AFTER PILOT REPORTED NO INDICATION OF CHARGE AFTER HIS LAST LANDING. AFTER MAKING A FEW TEST, IT WAS DETERINED THAT THE ALTERNATOR WAS FAULTY. THIS NEW ALTERNATOR WAS INSTALLED ON THE AIRCRAFT AS A REPLACEMENT FOR THE PREVIOUS DEFECTIVE ALTERNATOR. UPON REMOVAL OF THE DEFECTIVE ASSEMBLY NO EXTERIOR DAMAGES WAS FOUND THAT COULD HAVE LEAD TO THE FAILURE. SOMETHING INSIDE THE ALTERNATOR HAD FAILED BUT SINCE THE ALTERNATOR IS PARTIALLY SEALED AND IS ON WARRANTY COVERAGE NO FURTHER ACTION WAS TAKEN TO INVESTIGATE TH FAILED ASSEMBLY.