What was found
CORROSION ON SUPPORT STRUCTURE, AFT WING-TO-FUSELAGE FAIRING FS 909 MID ANGLES. MARKED. (C-CHECK RO 7/20/2021) CORROSION COVERS MORE THAN 30% OF AFT WING-TO-FUSELAGE FAIRING FS 909 MID ANGLES AND IN MULTIPLE SPOTS NEXT TO FASTENER HOLES CORROSION IS 100% THROUGH PART. ANGLES ARE OUT OF LIMITS REF CRJ700 SRM 53-82-55-101-002-A01. REPLACE ANGLES.RECEIVED NEW ANGLE PN:SH670-39336-3 AND UPON FURTHER EVALUATION ANGLES PN:SH670-39337-3 NO CORROSION FOUND AND RESTORED FINISH REF CRJ-700 SRM 51-25-16-001-001-A01. REMOVED AND INSTALLED NEW ANGLES P/N SH670-39336-3 AND ANGLE P/N SH670-39337-3 ON AFT WING - TO- FUSELAGE FAIRING FS 909. IAW CRJ 700, SRM 51-42-06-001-001-A01. RESTORED FINISH ALL FASTENERS IAW CRJ 700 SRM 51-25-16-001-001-A01