What was found
DURING FLAP RETRACTION FROM 15 DEGREES TO 5 DEGREES THE OUTBOARD TRAILING EDGE FLAPS STAYED AT 15 DEGREES. ALTERNATE PROCEDURES WERE USED TO RETRACT FLAPS. CHECKED THE FLAPS, FLAP DRIVE SYSTEM, CONTROL SYSTEM, FOLLOW UP SYSTEM, OPERATION OF BYPASS VALVES, AND OPERATED FLAPS WITH NO DEFECTS NOTED. REPLACED THE OUTBOARD FLAP POSITION INDICATOR AS A PRECAUTIONARY MEASURE.