As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MCI INSPECTION FRAME 7 ON THE LT SIDE, DIRECTLY BEHIND AFT EDGE OF PILOTS SIDE WINDOW WAS FOUND TO BE CORRODED IN THE UPPER TUB. ENGINEERING EVALUATED THE CORROSION AND DETERMINED THAT REPAIR WAS NEEDED AND ISSUED AN ENGINEERING INSTRUCTION FOR THE REPAIR. MAINTENANCE PERFORMED REPAIR IAW THE ISSUED ENGINEERING INSTRUCTION. NO FURTHER ACTION REQUIRED. (CLOSED)