What was found
ON INITIAL DESCENT WHEN THRUST LEVERS WERE STARTING TO GO TO IDLE, LT ENG EXHIBITED INTENSE COMPRESSOR STALL AT 36000. AFTER COMPRESSOR STALL, ENGINE PARAMETERS STAYED IN NORMAL RANGE. DECLARED EMERGENCY. LANDED WITHOUT INCIDENT & ACFT GROUNDED. BORESCOPE INSPECTION IAW AMM 72-00-00 GOOD. NO DEFECTS. SUBSEQUENT TO THE COMPLIANCE OF B767 FAULT ISOLATION MANUAL (FIM) 71-05-FAULT TREE 848, PROPULSION INTERFACE MONITOR UNIT FLAGGED 155 19-A PS3 SEN DISAGREE, FIM 71-01-FAULT TREE 951 WQAR CARD REMOVED AND SENT TO ATI ENGINEERING FOR REVIEW & TECHNICAL SUPPORT. LT ENG POWER MANAGEMENT/ECU CONTROL R & R IAW AMM 73-21-15. POWER ASSURANCE TEST IAW AMM 71-00-00 SATIS. NO FAULTS. AIRCRAFT RELEASED TO SERVICE.