What was found
LGA - FLT 197 - FLAP TAKEOFF SELECTOR DOES NOT LOCK FLAPS IN THE 'OPTIUM FLAP' POSITION, ALTHOUGH THE DETENT CAN BE SEEN THE FLAP HANDLE DOES NOT 'LOCK' INTHE DETENT AND CAN BE BUMPED AND CHANGE POSITION FOR TAKEOFF. INSPECTED, LUBED AND OPERATED DIAL A FLAP MECH SEVERAL TIMES, FOUND TO WORK NORMAL IAW MM 27-50-00. (M)