As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
C-CHECK: NON ROUTINE N0331; AFT MAIN CABIN RT SHEAR PLATE AT FRAME 69R TO 70R HAS CORROSION. AIRCRAFT IS IN C-CHECK, SHEAR PLATE ALSO OLD CONFIGURATION. REMOVED AND REPLACED SHEAR PLATE IAW FRONTIER EO A)-53EO-31434 REV ORIGINAL AND A319 SRM 51-42-11.