The Autonomous Underwater Vehicle, a US Navy probe equipped with side-scan sonar, was again deployed last night from Australian navy ship Ocean Shield to map the ocean floor.
Data from the underwater vehicle Bluefin-21 was downloaded and being analyzed by the search authorities, according to a Joint Agency Coordinating Center (JACC) statement.
Australian Maritime Safety Authority has planned a visual search area totaling approximately 55,151 square kilometers.
"The center of the search areas lies approximately 2,087 kilometers north west of Perth," the statement said.