What was found
DURING INSPECTIONS PER SI 4-58663-12AD, THE LAMINATED SHIMS INSTALLED ON THE RIGHT AND LEFT WING INBOARD TRAILING EDGE FLAP INBOARD TRACKS WERE FOUND TO HAVE MIGRATED GREATER THAN THE 0.25 LIMIT SPECIFIED IN THE INSPECTION. IN COMPLIANCE WITH AD 90-07-05, THE MIGRATED RIGHT HAND SHIM WILL BE RELOCATED, THE LEFT HAND SHIM WILL BE REPLACED AND ATTACHMENTS RETORQUED.