What was found
LS NR 4 FLAP CARRIAGE HAS THRUST NUT LOOSE, IT HAS EXCESS CLEARANCE BETWEEN SHIMS AND FLAP FITTING. REMOVED LEFT INBOARD FLAP ASSY PER MM 27-51-3. FOUND LEFT INBOARD THRUST BEARING CASTING OUT OF LIMITS PER MM 27-51-3. REMOVED CARRIAGES FROM OLD FLAP AND TRANSFERRED TO NEW FLAP ASSY PER B 727 MM 27-51-3. INSTALLED LEFT INBOARD FLAP ASSY PER MM 27-51-3. ADJUSTED TRAILING EDGE FLAP TO ROLLER CLEARANCE AND ADJUSTED DROOP PER MM 27-51-3. OPS CK NORMAL PER MM 27-51-3, N/R 1144.