What was found
REPEAT WRITE UP. BEGAN DESCENT FROM 43,000FT. THROTTLE WAS AT OR NEAR IDLE. AT 43,000FT WE FELT A COMPRESSOR STALL WHILE OBSERVING A RIGHT ENGINE ROLL BACK FOLLOWED BY A BLUE CAS MESSAGE ENG SHUTDOWN R. WITHIN 5-10 SECONDS THE ENGINE AUTOMATICALLY RESTARTED. EVENT MARKER WAS PRESSED (17:00Z) AND THE FLIGHT CONTINUED WITH NO OTHER ABNORMAL INDICATIONS. REMOVED RT FCU & INSTALLED REPAIRED LISTED BELOW IAW AMM 73-10-02. SWAPPED EECS IAW AMM 73·20-02. PERFORMED UNCAPPED AND CAPPED POWER ASSURANCE TEST AND FOUND TEST FAILED. TROUBLESHOT TO RH EEC NOT MIRRORED. MIRRORED LH AND RH EECS IAW MM 77-40-01. VERIFIED EEC MIRRORING. ALL LEAK AND OPERATIONAL CHECKS SATISFACTORY. POWER ASSURANCE TEST SATISFACTORY.