What was found
AFTER LANDING, LEFT MLG DOOR STARTED CYCLING OPEN AND CLOSED. DURING TROUBLESHOOTING OF DOOR PROBLEM, LEFT MLG UPPER SIDE BRACE SEGMENT WAS FOUND BROKEN AT THE FWD TRUNNION. REF IPC 32-10-1, FIGURE 4, ITEM 310. A/C HOURS 31,889. A/C CYCLES 71,297.