What was found
LEFT WING UPPER TE EDGE PANEL SUPPORT TEE CORRODED ALONG ENTIRE LENGTH. VIEWED THROUGH PANELS 561AB & 552HB. REMOVED LT WING UPPER TE PANELS FWD INBD AILERON. REMOVED TE PANEL SUPPORT. REINSTALLED SERVICEABLE SUPPORT TE PN 113T1510-33 & TE PANELS IAW SRM CH 51-40-02. SDR INFO, CORRODED, PN 113T1510-33, PART NAME SUPPORT TEE CHORD, SN NSN, WS LOCATION 289. ACFT WAS GNDED.