What was found
AIRCRAFT IN BASE MAINTENANCE: LEFT WING OUTBOARD AFT FLAP INBOARD END IS DELAMINATED UPPER EXTERNAL SURFACE. EVALUATED LEFT HAND OUTBOARD AFT FLAP INBOARD END UPPER AND LOWER SKIN AND FOUND DISBOND DAMAGE TO EXCEED SRM REPAIR LIMITS, PER B737-NG SRM 57-53-- 01-2R-16. REMOVED AND REPLACED LEFT WING OUTBOARD AFT FLAP, PER B737NG AMM 27-51-22. PERFORMED SATISFACTORY ADJUSTMENT CHECK OF LEFT WING OUTBOARD AFT FLAP, PER AMM 27-51-22.