What was found
DURING DESCENT INTO HRL; THE ENG 2 LOW PRESS LIGHT ILLUMINATED. ABOUT 30 SECONDS LATER THE ELEC 1 LOW PRESS LIGHT ILLUMINATED ON THE B SIDE. FOLLOWED QRH; LANDED FLAPS 15 USING ALT FLAPS SWITCH. NORMAL LANDING AND SHORT TAXI TO THE GATE. / [01] SERVICED HYD FLUID B SYSTEM IAW MM 12-12-00 ( B SYSTEM AT QTY AT REFILL.) REMOVED & REPLACED BOTH EDP AND ELECTRIC CASE DRAIN FILTERS REF AMM 29-11-51. ENG CASE DRAIN FILTERS REF. B 29-11-41. R & RD # 5 SPOILER ACTUATED IAW MM 27-61-11 # 5 SPOILER OPS CK D LEAK CKD OK. OPERATED ALL HYD. SYSTEMS AFTER REPLACING #1 ENG. CASE DRAIN FILTER IAW MM 29-11-51 AND B HYDRONIC CASE DRAIN FILTER IAW MM 29-11 -41 . ALL HYD. SYSTEM CKD OK.