What was found
CORROSION ON HOLES 27 AND 28, CENTER BOX RH, AT HORIZONTAL STABILIZER. SUMMARY OF NRC 00581: HOLES 27 AND 28 CENTER BOX RH AT HORIZONTAL STABILIZER. WERE REPAIRED PER PRI 617657-14 REV 1 AND ER/A 617657-14 REV ORIG SECTION I: PERMANENT REPAIR. ASSOCIATED ER/A 14-617657 ADDED FOR AC 9560. (LP #0346973)