What was found
GOT FLAP SYS 1 AND 2 FAULT, FLAPS STOPPED AT 15 DEG AT DESTINATION, SHORT RWY, RETRACTED FLAPS, DIVERTED. FLAPS FAULTED AT 30 DEG AT ALTERNATE. REMOVED AND REPLACED NR 2 SCREWJACK ASSY AMM 27-54-22-4. FLAPS OPS CK GOOD. REINSTALLED ALL FAIRINGS. COMPLETED OPERATIONAL CHECK OF FLAP SYSTEM, REF MM 27-54-22. ALL OPERATIONS NORMAL. (RESET FAULT BALLS ON SFCC AND POPPET INDICATOR ON RIGHT TORQUE LIMITER) UNIT WAS OVERHAULED.