What was found
DURING CRUISE AT FL300, "RES PRESS" LIGHT ON MCD CONTROL PANEL WAS ILLUMINATED STEADY. ALL PRESSURE INDICATIONS NORMAL. LIGHT WAS NOT ILLUMINATED AFTER SHUTDOWN. **DEFERRED CABIN/CARGO DOOR RESIDUAL PRESSURE WARNING SYSTEM IAW A300 M.E.L 52-73-02. PLACARD INSTALLED.T/S PER AWM 52-73-01, FOUND BROKEN WIRE 5273-131 BROKEN AT FWD CARGO DOOR FEED THROUGH. REPAIRED PER ESPM 20-43-11. TESTED PER AMM 52-73-00. M750958 CLEARED.