What was found
ETOPS SIGNIFICANT SYSTEM - BTB - ON TAXI OUT L PRIM HYD OVHT EICAS ILLUMINATED. PERF FIM 29-11-00 FIG 117. FOUND CASE DRAIN EDP FILTER CLOGGED W/METAL PARTICLES. REPLACED NR 1 EDP PER AMM 29-11-05 OPS AND LK CK PEND. FLUSH L HYD SYS PER AMM 29-11-00-172-113. COMPLETED UP TO STEP 4C. STEP 5-10 PEND. DRAINED L SYS, NEEDS TO BE RESERVICED. OPS AND LK CK OF NR 1 EDP PENDING. ACCOMP STEP 5-10 29-11-00. RESERVICED L SYS. OPS CHECK AND LEAK CHECK OF LT EDP AND FILTERS CHECK OK. OK FOR SERVICE.