What was found
DURING HEAVY CHECK FOUND REAR INTERNAL FUSELAGE, LH INTERCOSTAL BETWEEN FR90-FR91 CORRODED. REMOVED AND REPLACED LH INTERCOSTAL AND ANGEL SUPPORT IAW EMB 170/175 SRM 51-41-01, 51-41-02
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING HEAVY CHECK FOUND REAR INTERNAL FUSELAGE, LH INTERCOSTAL BETWEEN FR90-FR91 CORRODED. REMOVED AND REPLACED LH INTERCOSTAL AND ANGEL SUPPORT IAW EMB 170/175 SRM 51-41-01, 51-41-02