What was found
SAL - MAJOR REPAIR - NR 5910947 - DURING BC4 CHECK DISCOVERED LEVEL 2 GALVANIC CORROSION ON SILL BEAM LOCATED ON FRAME 66-1" AT Y-1310 IN THE PAX CABIN AT THE LOWER R2 CUTOUT. CORROSION WAS REMOVED AND RE-WORK WAS FOUND TO BE OUT OF LIMITS IAW AIRBUS 319 SRM 53-41-14. MAINTENANCE REMOVED DAMAGED AREA IAW AIRBUS 319 SRM 53-41-14 FIG 201. FABRICATED AND INSTALLED REPAIR ANGLE ON SILL BEAM LOCATED ON FRAME 66-1" AT Y-1310 IN THE PAX CABIN AT THE LOWER R2 CUTOUT IAW AIRBUS 319 SRM 53-41-14.