What was found
CORROSION ON LOWER SILL BTWN BS 761.85 - 797, RT & LT SIDES AT INTERNAL OVERWING LONGERON ASSEMBLIES. THE SILLS WERE REPAIRED IAW EA CRJ953-23259, REV IR, EA CRJ953-23260, REV IR, EA CRJ953-23261, REV IR, EA CRJ953-23262, REV IR, EA CRJ953-23263, REV IR, EA CRJ953-23264, REV IR, EA CRJ953-23265, REV IR, & EA CRJ953-23266, REV IR.