As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R/H PRESSURE FLOOR SILL ASSY ON PAD UP AREA AT STA 449.88 & RBL 43 AND STA 461 & RBL 43 HAS SURFACE CORROSION AIRCRAFT REMOVED FROM SERVICE REMOVED SURFACE CORROSIONBY HAD AT BOTH STA 449.85 AND STA 461 & RBL 43. STA 449.85 HAD AN AREA OF 1.0" X 1.0" X .002" REMOVED LEAVING .076" MATERIAL REMAING AT STA 449.85 OF .078" FROM ORIGINAL THICKNESS AND STA 461 HAD AN AREA OF 1.0" X 1.0" X .002" REMOVED AT STA 461 LEAVING .077" FROM ORIGINAL THICKNESS. REF BOMBARDIER REO 601R-53-41-666