What was found
PDIS 953 29-02 8832 23AUG23 ROA OPEN U FIRST EICAS MESSAGE WAS L HYD QTY. RAN QRH 13.1.2. A FEW MOMENTS LATER EICAS MESSAGE L HYD SYS PRESS. RAN QRH 13.1.5. ***EMERGENCY DECLARED*** ENT BY:3692956 RPT BY:3692956 SHGN 23AUG23 15:32 ROA U AMM: 29-11-17-4 FOUND DPI FOR LEFT EDP LEAKING THROUGH 'INDICATOR'. REMOVED PRESSURE FILTER ELEMENT AND CASE DRAIN FILTER ELEMENT. FOUND SMALL QUANTITY OF EQUALLY SIZED METAL PARTICLES IN CASE DRAIN FILTER AND VERY FEW SMALL EQUALLY SIZED PARTICLES OF METAL IN PRESSURE FILTER IN REF TO 757 MM 29-11-17-4. PER 757 MM 29-11-17-4 STEP 2 G. (3) (A) PUMP CHANGE IS NOT NECESSARY. SHGN 23AUG23 20:58 ROA U AMM: 29-11-17-4 R&R BOTH FLITERS ON LEFT EDP MODULE OPS AND LEAK CHECK GOOD MM 29-11-17-4. ....STILL AWAITING DPI SWITCH..