What was found
AIRCRAFT WAS GROUNDED: CORROSION ON UPPER SPLICE O/B SIDE ON LOWER SILL AT LEVEL FR66 STRG 23L. MEASURES OF CORROSION ARE: L= 0.525 INCH, W= 0.260 INCH, D= 0.018 INCH. MAINTENACE REPLACED UPPER SPLICE OUTBOARD POSITION LOCATED ON LOWER SILL ON FR66 AT LEVEL OF STRG 23L IAW A319 SRM 51-42-11-801, A319 SRM 51-72-11-911-001 AND DRAWING E53474250.