What was found
AVI. DOOR SURROUNDING STRUCTURE AFT MID SUPPORT INTERCOSTALS 2 EA ARE COORRODED. (C-CHECK RO 7/26/2022) FOUND CORROSION TO BE OUT OF LIMITS. REMOVED AND REPLACED 2 EA AVI DOOR SURROUND INTERCOSTALS IAW CRJ 200 SRM 51-42-06 AND 51-42-21 DATED 11/25/2020 ALSO PERFORMED SKY CARD 51-900-1003-SKY AND ATTACHED FORM M-337. NO CHANGE TO WEIGHT AND BALANCE. REF CONTINUATION CARD FOR WORK PERFORMED.