What was found
PILOT REPORTED TO MAINTENANCE, THAT ON PRE-FLIGHT, WING FLAPS RETRACTED, LEFT FLAP COULD BE MOVED AFT BY HAND (UNNESTED) ABOUT ONE INCH. INVESTIGATION REVEALED COMPLETE FAILURE OF, PN 452-645, ROD END AT OUTBOARD END OF LEFT PUSH ROD ASSY, PN 8507703. ACTUAL LOCATIONS IN LEFT MLG WELL, AFT INBOARD CORNER WHERE ATTACHMENT TO INBOARD FLAP BELLCRANK OCCURS. CAUSE OF FAILURE UNKNOWN. SUBMITTER STATED THIS CONDITION COULD DIRECTLY LEAD TO SUDDEN ASYMMETRICAL FLAPS AND LESS OF CONTROL OF AIRCRAFT.