What was found
AFTER SEVERAL SUCCESSFUL FLAP RETRACTION CYCLES, OUTBOARD FLAPS STOPPED AT 5 DEG & STAYED THERE WHILE FLAPS 2 WERE COMMANDED, ALTERNATE FLAP SELECTION WAS UNABLE TO MOVE THEM FURTHER UP OR DOWN. USE OF NORMAL HYD MOTOR WAS ABLE TO DRIVE OUTBOARDS DOWN. BUT NO SECOND ATTEMPT WAS MADE TO RETRACT THEM. TROUBLESHOT O/B FLAP DRIVE SYS IAW FEDEX MM, FOUND BOLT MISS NR 7 FLP CARRIAGE LOWER ACCESS CVR I/B SIDE. SPCT MISSING BOLT OF BIND BETWEEN MIDFLAP/FLAP TRCK CAUSE OB FLAP SYS TEMPORARILY INACTIVE. REPLACED MISSING BOLT. INSPECTED OB FLAP SYS/SAFETYS, NO ISSUES. OP CHECK FLAP DRIVE SYS TO FULL EXTREMES 50 TIMES. NO PROBLEMS.