What was found
471 20081 330500 MFG 453-900-500 41.3 HRS RH FLOOR DOOR SILL STRUCTURE HAS 4 SPOTS OF EXFOLIATION FS295-FS349. AIRCRAFT REMOVED FROM SERVICE. BLENDED CORROSION ON ANGLE P/N 601R38303-239 TO SERVICE DOOR SILL BETWEEN FS319.7 TO FS349 AND EVALUATED ORIGINAL MATERIAL THICKNESS IS 0.063Ï¿½. MINIMUM REMAINING THICKNESS IS 0.037, L= 4.5Ï¿½ X W=1.5Ï¿½ FWD BLEND #1 AND MINIMUM REMAINING THICKNESS IS 0.043 L=9.5Ï¿½ X W=1.5Ï¿½ AFT BLEND #2. TEMPORARY DISPOSITION: THE SUBJECT CONDITION IS STRUCTURALLY ACCEPTABLE FOR 5,000 FLIGHT HOURS FROM THE TIME OF INCORPORATION OF REO # 601R53-21-3661 REVÏ¿½DATED 2023-11-10. AND REMOVED AND REPLACED 1EA ANGLE SUPPORT P/N 601R38783-13 AND 1EA FITTING P/N 601R38672-3 AT FS349 RBL36 TO RBL41 ON RH FLOOR STRUCTURE IAW CRJ SRM 51-42-06, 51-42-13, AND 51-42-20.PERFORMED HFEC WITH NO INDICATIONS. VERIFIED NO LOOSED OR PULLED RIVETS AND DENT IS SMOOTH AND FREE OF CREASE.