Transport officials from Australia, Malaysia and China met in the Western Australia state capital of Perth to greet the crew of Fugro Equator, who were ordered to return last week after the countries officially suspended the nearly three-year search for the plane in the Indian Ocean.
The $160 million deep-sea sonar search off Australia's west coast failed to find any trace of the plane, which vanished March 8, 2014, on a flight from Kuala Lumpur to Beijing.
Several relatives of the 239 people on board the plane have fiercely criticized the decision to end the search before finding their loved ones, and called on officials to scour a new 25,000-square kilometer area immediately to the north of the old search zone that a group of international investigators recently identified as the likeliest resting place of the wreckage.
The investigators calculated the possible new crash site by reanalyzing satellite data that tracked the plane's movements and looking at a new drift analysis of debris that has washed ashore on coastlines throughout the Indian Ocean.
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On Monday, the bureau's chief commissioner expressed confidence that the plane probably lies in that new zone. "It's highly likely that the area now defined by the experts contains the aircraft but that's not absolutely for certain," Greg Hood told reporters.
But the three countries agreed months ago that the hunt would be suspended after crews finished combing the official search zone unless credible new evidence emerged that pinpointed the specific location of the aircraft.
The investigators' recommendation, they said, wasn't precise enough to justify an extension of the search.