What was found
LOG PAGE 251714, ITEM 1, ENGINE #4 LOST THRUST IN CRUISE N1, 32% FUEL FLOW 0.3 ALL ENGINE INDICATIONS WERE NORMAL IN DESCENT AT LOW ENGINE POWER EICAS ENGINE FAIL MSG SHOWED WITH OIL PRESS GETTING LOW PROPTING PRECAUTIONARY SHUTDOWN, AFTER ARRIVAL TO ANC, MAINTENANCE TROUBLESHOT ENGINE FUEL FLOW AND DETERMINED HMU WAS AT FAULT PER FIM 73-03 TASK 835, PART ORDERED, RSW SHIPPED PART, ARRIVED 10/13, ANC MX REPLACED THE HMU PER AMM 73-21-14, ENGINE RUN PERFOMED, LEAK AND OPS CHECKED GOOD.