List of accidents and incidents involving commercial aircraft 1919 – 1959
July 17 – Miss Macao, a Catalina seaplane operated by a Cathay Pacific subsidiary, over the Pearl River delta from Macau to Hong Kong, is hijacked with 23 passengers and three crew on board by a group attempting to rob the passengers; following a struggle in the cockpit, a crash kills all on board except one passenger, later identified as the lead hijacker; this is the earliest known airliner hijacking.