What was found
DURING C18 CHECK FOUND A DISBOND AREA ON THE UPPER SURFACE OF THE NR 4 SPOILER, 36" FROM INBOARD END FROM WBL 123.75 TO WBL 135.75. MAINTENANCE REMOVED DISBOND AREA FROM THE UPPER SURFACE OF THE NR 4 SPOILER, 36" FROM INBOARD END IAW BOEING 737-300 SRM. FABRICATED FILLER AND DOUBLER IAW BOEING 737-300 SRM 81-70-10-0. BONDED AND SEALED REPAIR PARTS TO THE UPPER SURFACE OF THE NR 4 SPOILER FROM WBL 123.75 TO WBL 135.75 IAW BOEING 737-300 SRM 51-70-10-0 FIG 31.