What was found
AT FL360 STARTING THE DESCENT WE RECEIVED A LVL 2 SELECT FADEC ALTN ALERT ON ENG 2. STARTED THE QRH CHECKLIST WE RECEIVED A LVL 2 ENG 2 RPM LO ALERT. COMPLETED THE FADEC CHECKLIST AND GOT THE FADEC BACK. THEN COMPLETED THE ENG 2 RPM LO CHECKLIST WITH A SUCCESSFUL RESTART OF THE ENG 2 WITH GOOD ENGINE INDICATIONS. PER THE CHECKLIST WE DESELECTED THE IGNITION OVERRIDE SWITCH. WITHIN 2-3 MINS THE ENG 2 ROLLED BACK AGAIN. PERFORMED CHECKLIST AGAIN WITH A SUCCESSFUL RESTART BUT THIS TIME KEPT IGNITION OVERRIDE SELECTED FOR THE REMAINDER OF THE FLIGHT. IT STAYED RUNNING WITH NORMAL INDICATIONS. WHEN THE ENG 2 WAS JUST WINDMILLING BOTH TIMES IT SHOWED FUEL FLOW OF ABOUT 500-600 AND N2 WAS AT ABOUT 20%. ENG PRESSURE AND TEMPS CAME BACK AS WELL. NO VIBRATIONS OR ANY ABNORMALITIES WERE NOTICED. WE DID NOT GET THE FADEC ALTN ALERT WHEN THE ENGINE ROLLED BACK THE SECOND TIME.