What was found
PDX - RT OUTBOARD FLAP HAS TRAILING EDGE DAMAGE AT APPROX WING STATION YW 273.0. DAMAGE AREA IS APPROX 2.75 INCH IN LENGTH BY APPROX .75 INCH WIDE IN CENTER OF DAMAGED AREA. MAINTENANCE CUT AWAY DAMAGE IN UPPER PLANK AND TRAILING EDGE CHANNEL IAW STEP 2 OF SECT II OF RED 8/4-57-556. REMOVED PLANK FROM AIRCRAFT. COMPLETED STEPS 3-7 OF RD 8/4-57-556. CONTINUED WITH SECT III STEPS 1-4. C/W SECT III STEPS 5-6 OF RD 8/4-57-556. C/W SECT II STEP 7 OF WA 6-57-381. INSPECTED FLAP TRAILING EDGE AND PLANK FOR CLEANLINESS AND DEBRIS. NO DISCREPANCIES NOTED. OK TO INSTALL PLANK. C/W STEP 7-10 OF EA 6-57-381. PAINTED RT OUTBOARD FLAP TRAILING EDGE IAW EA 6-57-381, PG 4 STEP 11.