As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER LEVELOFF AT FL310, SYS A HYDRAULIC PUMP LIGHTS FLICKERED AND QUANTITY RAPIDLY DROPPED TO (ZERO). COMPLIED W/QRH AND LANDED IN MEM. FOUND HYD PRESS. LINE FROM NR 1 ENG TO "A" SYS MODULE CRACKED. INSTALLED NEW HYDRAULIC LINE AT "A" SYSTEM MODULE REF 727-200. REMOVED AND REPLACED CASE DRAIN FLITERS PER 727-200.