What was found
#4 SLAT HAS AN AREA OF DELAMINATION ON THE TRAILING EDGE WEDGE ABOVE THE SLAT ACTUATOR. APPROXIMATELY 2 INCHES BY 1 INCH. / [01] REMOVED #4 SLAT AND SWAPPED MAIN TRACKS TO THE NEW SLAT PER AMM 27-81-21.;[02] PART REMOVAL UPDATE;[03] RII: INSPECTED THE WORK PERFORMED ON C/A #1; NO DEFECTS NOTED.;[04] INSTALLED DOWN STOPS AND AUXILIARY TRACKS TO AUXILIARY ARMS IN REF TO AMM 27-81-21.;[05] INSPECTION C/W CORRECTIVE ACTION STEP 4. OK TO INSTALL GIVEN ON FAULT CARD TTG8Q00EAQKY.;[06] INSPECTION C/W #4 LEADING EDGE SLAT ADJUSTMENT AND CLEARANCE CHECK PER AMM 27-81-00. OPS CHECK GOOD. RII ACCOMPLISHED.;[07] SLAT ACTUATOR RECONNECT PERFORMED ON CAR TTG8R0089NVH.;[08] REMOVED AND REPLACED #4 SLAT PER M/M 27-81-21. SEE ATTACHED SIGN OFFS AND CARD #S TTG800EAQKY AND TTG8R0089NVH FOR ALL WORK PERFORMED.;[09] INSPECTION C/W CORRECTIVE ACTION STEP 7 AND 8 WITH RII ACCOMPLISHED.