What was found
LH JACKING FITTING INTERCOSTAL IS CORRODED. LH JACKING FITTING INTERCOSTAL IS CORRODED. UPON FURTHER INVESTIGATION FOUND LH JACK FITTING INTERCOSTAL P/N:CC670-32179-1 HEAVY CORRODED ON MULTIPLE AREAS AROUND FASTENERS. NO ALLOWABLE DAMAGE PROVIDED PER CRJ700 SRM. PART REQUIRES REPLACEMENT. REMOVED AND REPLACED LH JACK FITTING INTERCOSTAL P/N:CC670-32179-1 IAW CRJ700 SRM 51-42-06-001-001-A01 AND 51-42-21-001-001-A01 REMOVED FASTENERS ON LH JACKING FITTING INTERCOSTAL ATTACHED TO SKIN BETWEEN FS265 TO FS280 , IAW CRJ-700 SRM 51-42-06-001-001-A01 AND 51-42-21-001-001-A01. INSTALLED FASTENERS ON LH JACKING FITTING INTERCOSTAL ATTACHED TO SKIN BETWEEN FS265 TO FS280 IAW CRJ-700 SRM 51-42-06-001-001-A01 AND 51-42-21-001-001-A01. REMOVED LH JACK FITTING INTERCOSTAL P/N:CC670-32179-1 BETWEEN FS265 TO FS280 STR27, IAW CRJ-700 SRM 51-42-21-001-001-A01. INSTALLED LH JACK FITTING INTERCOSTAL P/N:CC670-32179-1 BETWEEN FS265 TO FS280 STR27, IAW CRJ-700 SRM 51-42-21-001-001-A01. LOCATE AND DRILL NEW LH JACK FITTING INTERCOSTAL P/N:CC670-32179-1 BETWEEN FS265 TO FS280 STR27 LOCATED AND DRILLED LH JACK FITTING INTERCOSTAL P/N:CC670-32179-1 BETWEEN FS265 TO FS280 STR27, IAW CRJ-700 SRM 51-40-11-001-001-A01. C/W ENDEAVOR AIR EA CRJ753-18875DATE 3/29/2025 REV IR