What was found
MCN - MAJOR REPAIR - DURING C4 CHECK DISCOVERED CORROSION IN SEVERAL LOCATION ON STRINGER 42R, FROM FR 54 + 16" TO FR 58 + 6". MAINTENANCE REMOVED CORROSION ON STRINGER 42R, FROM FR 54 + 16" TO FR 58 + 6", IAW AIRBUS 320 SRM 51-74-00. NO ALLOWABLE DAMAGE LIMITS ARE AVAILABLE IN THE AIRBUS A320 SRM. MAINTENANCE REMOVED DAMAGED SECTION FROM STRINGER 42R IAW AMERICA WEST AIRLINES ENGINEERING REPAIR 26-5341-05215-SS1. FABRICATED ANGLE IAW AWA ER 26-5341-05215-SS1. PREPARED ANGLE, STRINGER, CLIPS FOR INSTALLATION IAW AWA ER 26-5341-05215-SS1. INSTALLED REPAIR PART ON STRINGER 42R. FROM FR 54 + 16" TO FR 58 + 6" IAW AWA ER 26-5341-05215-SS1.