Head of Search Admits Flight 370 May Never Be Found

A worker sweeps next to a giant mural featuring missing Malaysia Airlines flight MH370 displayed on the grounds of a school in Manila's financial district of Makati on March 18, 2014, created as part of solidarity action by concerned artists for the passengers and crew of the missing plane. Three million people around the world have joined an effort led by a satellite operator to locate the missing Malaysia Airlines plane, in what may be the largest crowdsourcing project of its kind. The plane went missing early on March 8 with 239 passengers and crew aboard, spawning a massive international search across Southeast Asia and the Indian Ocean that has turned up no trace of wreckage. AFP PHOTO / TED ALJIBE
Photo: TED ALJIBE/AFP/Getty Images)

Referring to the effort as perhaps the "most challenging" ever, Air Chief Marshal Angus Houston of Australia "has raised the possibility that no wreckage from the passenger jet may ever be found," the Sydney Morning Herald reports. "We don't know what altitude the aircraft was traveling at. We don't really know the speed it was going," he said. "Inevitably, if we don't find wreckage on the surface, we are eventually going to have to, probably, in consultation with everybody who has a stake in this, review what we do next." Now involved in the hunt: director Peter Jackson's personal $80 million Gulfstream jet.