As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: CORROSION ON TRAILING EDGE TOP SKIN LOWER SURFACE EXACTLY LOCATION IS RIB 14 PLUS 16 INCHES LEFT WING L=7.540 INCHES W=2.000 INCHES D=0.030 INCHES. MAINTENANCE PERFORMED TIME LIMITED REPAIR (EXTERNAL DOUBLER) ON RIB 14 PLUS 16 INCHES ON TRAILING EDGE TOP SKIN LEFT WING IAW EA#366421.