What was found
AFT CARGO PIT STRINGER 42L CORRODED BETWEEN FR56 AND FR59. MAJOR REPAIR ACCOMPLISHED. REMOVED DAMAGED STRINGER SECTION AND EXISTING STRINGER SPLICES. FABRICATED & INSTALLED NEW STRINGER SECTION FROM FR53 - FR59 WITH STRINGER SPLICE REPAIRS LOCATED BETWEEN FR56-57 AND FR58-59 REF SRM 53-00-13 FIG 201. THESE STRINGER SPLICE REPAIRS REQUIRE REINSPECTION WITHIN 60000 CYCLES REF SRI53-00-13-2-001-00 TABLE 205. CURRENT PTC IS 22670. STRINGER SPLICE REPAIR REINSPECTION THRESHOLD IS WITHIN 60000 FLIGHT CYCLES AFTER REPAIR EMBODIMENT. CURRENT PTC IS 22670. SRI53-00-13-2-001-00 TABLE 205 IS THE RELEVANT INSPECTION INSRTUCTION REFERENCE.