What was found
CORROSION ON EDGE OF CABIN FLOOR FRAME AT FS 349 AND RBL42 AND CORROSION ON FRAME SUPPORT ANGLE P/N: 601R38783-13 AT FS 349 AND RBL 32 TO RBL 42. *******************AIRCRAFT REMOVED FROM SERVICE********************* BLENDED AREA ON CABIN FLOOR FRAME AT FS349 & RBL 42 IAW CRJ200 SRM 51-21-06 REV 39. BLEND AREA IS WITHIN ALLOWABLE LIMITS IAW CRJ200 SRM 53-00-00 REV 39. HFEC INSPECTION PERFORMED AT BLEND AREA WITH NO INDICATIONS IAW CRJ200 NDT MANUAL PART 1 51-20-06 REV 43. RESTORED PROTECTIVE FINISH IAW CRJ200 SRM 51-25-01 REV 39. UPON FURTHER INVESTIGATION, FOUND FRAME SUPPORT ANGLE P/N: 601R38783-13 AT FS 349 & RBL 32 TO RBL 42 TO HAVE INTERGRANULAR CORROSION WITH EXFOLIATION NOT WITHIN ALLOWABLE LIMITS IAW CRJ200 SRM 53-00-00 REV 39. REMOVED FLOOR SUPPORT ANGLE AT FS 349 RBL 32 TO RBL 42 IAW CRJ200 51-42-06 REV 39. LOCATED AND DRILLED FLOOR SUPPORT ANGLE AT FS 349 & RBL 32 TO RBL 42 IAW CRJ200 SRM 51-40-11 REV 39. INSTALLED NEW FLOOR SUPPORT ANGLE P/N: 601R38783-13 AT FS 349 RBL 32 TO RBL 42 IAW CRJ200 SRM 51- 42-06 REV 39. WORK ACCOMPLISHED ON AERSALE WO #003697 CARD #20197 AT AERSALE CRS#4AER685B. N457AW TT: 39,910:44 TC: 39,007