Photo: Santiago Times

Searchers combing Antarctic seas have recovered parts of a military transport plane and human remains belonging to some of the 38 people aboard who vanished en route to the frozen continent, Chilean officials said Thursday.

Air Force Gen. Arturo Merino said at a news conference that based on the condition of the remains, he believed it would be “practically impossible” that any survivors would be pulled from the water alive.

An international team of searchers continued the hunt, while officials on shore said they would use DNA analysis to identify the crash victims.

Among the recovered items, searchers have found a landing wheel, sponge-like material from the fuel tanks and part of the plane's inside wall. Personal items include a backpack and a shoe, officials said.

"Remains of human beings that are most likely the passengers have been found among several pieces of the plane," Merino said. “I feel immense pain for this loss of lives.”

The C-130 Hercules, a military transport plane, departed Monday afternoon from a base in Punta Arenas in far-southern Chile on a regular maintenance flight for an Antarctic base. Radio contact was lost 70 minutes later.

After midnight, the Air Force declared the plane a loss, but it wasn’t until Wednesday that a plane scanning the seas first spotted floating debris believed to be from the plane.

The searchers located the remains roughly 30 kilometres from where pilots last made contact with the control tower, said officials, adding that the hunt has taken them to sea depths of 4,000 metres.

Ed Coleman, a pilot and chair of the Safety Science Department at Embry-Riddle Aeronautical University in Prescott, Arizona, said recovering the plane's flight recorder will be key to understanding what went wrong.

But recovering the bulk of the plane from the ocean's bottom — more than 2 miles underwater — could be very difficult. He said they could resort to taking video from remote operated vehicles.

It may be impossible to return some of the crash victims to their families, he said.

“It’s possible that some of them may never be recovered,” Coleman said. “A lot of times that happens in a deep-water recovery. It’s just not possible.”