What was found
DURING H CHK IN MSP, CORROSION AND/OR MISSING COATING WAS FOUND ON THE #2 ENG, INBD THRUST REVERSER (P/N 999-3001577 WITH FTN 5T0778) TORQUE BOX V-BLADE AT THE UPPER TO LOWER V-BLADE SEGMENTS. DAMAGE EXCEEDS CMM GRAPW1500BA-A-54-30-22-00001-661A-D ALLOWABLE DAMAGE LIMITS. REPAIRED REF ER/A 633878-14 PRI REV 0, REV 1 AND ER/A 633878-14 REV ORIGINAL. NOMINAL THICKNESS: 0.350". MRT: 0.225". MAX MATERIAL REMOVED: 0.025". ASSOCIATED ER/A 14-633878 ADDED FOR AC 8305. (LP# 1605048; AIRCRAFT WAS GROUNDED)