What was found
(CAN) THIS SDR IS TO REPORT AN UNAPPROVED PART THAT WAS INSTALLED ON A STARTER GENERATOR THAT FAILED IN FLIGHT. THE STARTER GENERATOR FAILED IN FLIGHT ON THE LT ENG & WAS REMOVED ON 28 FEB 2015. DETAILS OF THE EVENT WILL HAVE TO COME FROM THE OPERATOR. THE REMOVAL TAG NOTED IT SHORTED INTERNALLY. A TEARDOWN INSPECTION WAS DONE, THE ELEC FAILURE IS EVIDENCED BY TWO COMMUTER BARS 180 ½ APART MELTED AWAY & MELTED & OPEN COPPER PINS AT THE OPPOSITE DRIVE END OF THE ARMATURE. COPPER SPLATTER WAS FOUND ON THE BRUSH HOLDERS & INSIDE THE STATOR HOUSING AT THE DRIVE END. THERE WAS NO FAILURE OF THE BEARINGS. ON EXAMINATION OF THE PARTS, A STATOR HOUSING FROM ANOTHER MANUFACTURER WAS FOUND INSTALLED. THE STARTER GENERATOR, APC MODEL 250SG117Q WAS ASSEMBLED WITH A STATOR ASSEMBLY THAT WAS STAMPED PN 23046-311. THE CORRECT STATOR FOR THIS UNIT IS PN 250SG1156. PARTS ARE PRESENTLY QUARANTINED.