What was found
AVIONICS BAY DOOR SURROUND STRUCTURE, AFT INTERCOSTAL BETWEEN FS 379 AND FS 394 AT STGR 27L CORRODED. DAMAGED INTERCOSTAL BETWEEN FS 394 AND FS 394 STR 27L EXCEEDS ALLOWABLE LIMITS, IAW CRJ 900 SRM 53-21-23-101-003-A02. REMOVED INTERCOSTAL AT STR 27L BETWEEN FS 394 AND FS 409, IAW CRJ 900 SRM 51-42-06-001-001-A01 AND SRM 51-42-21-001-001-A01. LOCATED, DRILLED AND INSTALLED NEW SERVICEABLE INTERCOASTAL AT FS 394 AND FS 409 STGR 27L, IAW CRJ 900 SRM 51-40-11-001-001-A01 AND 51-42-06-001-001-A01 AND 51-42-21-001-001-A01.