What was found
MSP - FLT 910 EN ROUTE CLT TO MSP, AFTER TAKEOFF, THE AFT RIGHT DOOR SLIDE DISARM INDICATION CAME ON ECAM. THE CABIN CREW FOUND THAT THE SLIDE ARM HANDLE HAD COME OUT OF DETENT, AND WOULD NOT STAY DOWN. FLIGHT CONTINUED AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND THE DOOR SLIDE GIRT BAR STRAP WAS LOOSE AND INTERFERING WITH THE ARMING DETENT. THE STRAP WAS SECURED. AN OPERATIONAL CHECK WAS PERFORMED ON ALL DOORS. ALL DOORS WERE FOUND OK.