As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND ON ARRIVAL 5 BY 7 INCH SECTION OF PANEL 551VB MISSING LOWER LEFT WING JUST INBOARD OF LEFT MLG. SUSPECT FATIGUE FROM NORMAL AC OPERATION. FABRICATED ALUMINUM DOUBLER .040 THICK AND INSTALLED. NEED NEW 551VB PANEL MF1544 CREATED TO MONITOR UNTIL PANEL IS REPLACED.