AT SEA  - APRIL 11: Royal New Zealand Air Force (RNZAF) Co Pilot squadron Leader Brett McKenzie (L) and Flight Engineer Trent Wyatt sit in the cockpit aboard a P3 Orion maratime search aircraft as it flies over the southern Indian Ocean looking for debris from missing Malaysia Airlines flight MH370 on April 11, 2014 At Sea.  Search and rescue officials in Australia are confident they know the approximate position of the black box recorders from missing Malaysia Airlines Flight MH370, Australian Prime Minister Tony Abbott said on Friday. At the same time, however, the head of the agency coordinating the search said that the latest "ping" signal, which was captured by a listening device buoy on Thursday, was not related to the plane. (Photo by Richard Polden - Pool/Getty Images)