As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TNN - DURING 1/4 D-CHECK INSPECTION ON A/C AT AIR ASIA, SEVERE CORROSION WAS FOUND ON LT WING OUTBOARD T/E MID FLAP LOWER SKIN AT WBL 350. THE CORRODED SKIN 2 INCH BY 2 INCH IN SIZE WAS TRIMMED OUT AND REPAIRED PER B727 SRM 57-50-4 FIGURE 3. REF, HANGAR NON ROUTINE REPAIR ITEM CARD NR 809350 (SEQ NR 05010). (M)