What was found
ER/A 633493-14; A220-100 / FWD AND CNTR WING TO BODY FAIRING / FRAME / FR40, LBL 15 - RBL 15 / FR36, LBL 20 - RBL 20 / CORROSION. SUBJECT REPAIR REQUIRES FOLLOW-ON ACTION. ACCOMPLISH 633493-14, SECTION II REPETITIVE INSPECTION WITHIN EVERY 1,000 FLIGHT HOURS FROM 13,074 TOTAL AIRCRAFT FLIGHT HOURS AS OF 8APR26 UNTIL SECTION III IS ACCOMPLISHED. ACCOMPLISH SECTION III PERMANENT REPAIR WITHIN 10,000 FLIGHT HOURS FROM 13,074 TOTAL FLIGHT HOURS AS OF 8APR26. ADDITIONAL ENGINEERING AUTHORIZATION (ER/A REVISION) IS REQUIRED FOR FLIGHT BEYOND THIS LIMIT. ASSOCIATED ER/A 14-633493 ADDED FOR AC 8135. (LP# 1534542)