What was found
DURING A C-CHECK, LT WING OUTBOARD AILERON HAS THREE LOOSE RIVETS IN UPPER SKIN. REMOVED OLD SKIN FOR LT WING O/B AILERON IAW B727 SRM 51-30-2, FABRICATED NEW SKIN O/B AILERON FROM MAT 2024-T3 .020 PO900355 DIM 121 X 15.25 INCH AND DOUBLER SKIN FROM MAT 2024-T3 .020 PO 900355 DIM 121 X 15.25 INCH IAW B727 SRM 57-50-2. NEW SKIN DOUBLER CLEANED, TREATED, PRIMED, PREPPED AND BONDED IAW B727 SRM 51-40-5. INSTALLED NEW SKIN FROM O/B AILERON IAW B727 SRM 51-30-2.