What was found
AFTER TAKEOFF MAIN DECK CARGO DOOR OPEN CAME ON. CABIN ALT WAS CLIMBING ALSO. DEFERRED PER MEL 52-71-01. RELEASED FOR SERVICE PER MEL/CDL: 52-71-01 CATEGORY: C. MAIN DOOR CLOSED & LOCKED INDICATION ON ECAM DOOR PAGE - INOP. MAIN PERFORMED OPERATIONAL ADJUSTMENT, AND TEST PROCEDURES IAW A300-600 AMM 52-71-00-5, FOUND SWITCH 49WS OUT OF RIG, ADJUSTED, AND VERIFIED SWITCH ADJUSTMENT IAW A300-600 AMM 52-71-11-5 SUPP AMM 52-71-11-5, DOOR INDICATION OPERATIONAL CHECKS NORMAL.