As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT HYDRAULIC PUMP FAIL. PRESSURE FLUCTUATED BETWEEN 3000 PSI AND ZERO AT FLIGHT IDLE. TURNED LT ENG DRIVEN PUMP OFF AND TURNED ON TRANSFER PUMP, PRESSURE AND QTY NORMAL.//R/R LEFT ENG HYD PUMP PER M/M 29-11-01 GRD RUN GOOD CHECKED PLUG P1-3355 PIN A TO PLUG P1-7824B PIN B3 WIRING CHKD OK, CHECKED S-32 CHECK OK PER 717 FIM 29-10 TASK 801 HHAL5743/580.