What was found
TWO FLANGES UNDERFLOOR PANEL 271ALF AT FS559.00+16 BLO 0 ARE NOT INSTALLED. AIRCRAFT REMOVED FROM SERVICE. DURING EVALUATION FOUND 13 OVERSIZED HOLE EFFECTING RBL 9 BL 0 AND LBL 9 ON FLOOR BEAM FLANGES AND INSTALLED NEW FLANGES PN 6010R31025-23 AND PN 601R31025-99. PERFORMED HFEC WITH NO INDICATIONS. RESTORED PROTECTIVE FINISH. ALL WORK WITHIN LIMITS WAS PERFORMED IAW MHIRJ REO 601R-53-41-3162 REV A DATED 2023/05/08 AND CRJ SRM 51-42-06 REV 39. WORK PERFORMED UNDER AERSALE WORK ORDER 003911 CARD NO.20144, TT: 38,125:30 TC: 36,944