As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR1 ENG HYD PUMP LOW PRESSURE LIGHT ILLUMINATED IN FLIGHT. QUANTITY PERCENT FLUCUATED FROM 78 PERCENT TO 106 PERCENT FOR 20 MIN THEN SLOW DECREASE TO 48 PERCENT FOR 10 MIN THEN INCREASE TO 88 PERCENT FOR 10 MIN THEN SLOW DECREASE TO 15 PERCENT. FLIGHT CONTROL LIGHT BLINKED MOMENTARILY UPON LANDING WITH SPOILER DEPLOYMENT. REMOVED AND REPLACED NR1 ENGINE EDP IAW MM 29-11-11 OPS & LEAK CHECK GOOD. NOTE "A" SYSTEM HYDRAULIC FILTERS REPLACED.