What was found
PAX DOOR DD4 INTERCOSTAL CORRODED BETWEEN FS311.75 AND FS320. (C-CHECK RO 4/9/2022) UPON FURTHER INVESTIGATION FOUND CORROSION TO BE AT DD3 INTERCOSTAL AT FS311-FS320. REMOVED AND REPLACED PAX DOOR DD3 INTERCOSTAL AT FS311 AND 320 I.A.W. CRJ-700 SRM 51-42-21-001-001-A01 REV. 38B DATED 14 DEC 2020. MAJOR REPAIR TASK CARD 51-900-1002-SKY AND FORM M-337 COMPLETED AND ATTACHED. NO WEIGHT CHANGE NOTED. REFER TO CONTINUATION CARD FOR WORK PERFORMED.