Singapore authorities demonstrate equipment that will be used in the search for an AirAsia plane that went missing with 162 people on board. Gavino Garay reports. - REUTERS

Investigators use hydrophone to search for AirAsia plane

Singapore authorities demonstrate equipment that will be used in the search for an AirAsia plane that went missing with 162 people on board. Gavino Garay reports. - REUTERS

Published: 30 Dec 2014