What was found
FWD CARGO LWR CTR SEAL REST, UPPER FWD AND AFT SILL DOUBLER PLATES, SCUFF PLATE SUPPORTS, AND ATTACHMENT HARDWARE HAVE CORROSION. THIS IS THE 2ND ACFT TO HAVE THIS PROBLEM FOUND AFTER SILL SCUFF PLATES REMOVED. BELIEVE THE CAUSE MAY BE DUE TO LACK OF CORROSION PREVENTATIVE COMPOUND USED AND LACK OF GOOD DRAINAGE. ANOTHER ACFT WAS FOUND TO HAVE THE SAME CORROSION ISSUE. SEAL REST: PN 170-67467-001 DOUBLER: PN 170-67032-402 DOUBLER: PN 170-67115-002 SUPPORT: PN 170-67032-401 SUPPORT: PN 170-67032-402 SUPPORT: PN 170-67176-403 (QTY 3).