A radar warning about a fire door went off mid - flight on an Airbus aircraft . The aircraft , bound for Hong Kong , turned back to Singapore , the airline says . It landed safely and passengers were transferred to a replacement plane .
A cockpit warning about a cargo door went off mid-flight on an Airbus A380 . The superjumbo , headed for Hong Kong , turned back to Singapore , the airline says . It landed safely and passengers were transferred to a replacement plane .