An Indonesian airliner crashed into the sea on Monday, with the likely loss of all 189 people on board, as it tried to return to Jakarta minutes after take-off.
Lion Air flight JT610, an almost new Boeing 737 MAX 8, was en route from the capital to Pangkal Pinang.
执飞狮航JT610航班的是一架几乎全新的波音737 Max 8客机，出事时正从首都雅加达飞往邦加槟港。
Rescue officials said they had recovered human remains from the crash site, about 15 km off the coast.
Indonesia is one of the world's fastest-growing aviation markets, but its safety record is patchy.
If all aboard have died, the crash will be its second-worst air disaster since 1997, industry experts said.
The pilot had asked to return to base (RTB) shortly after take-off. It lost contact with ground staff after 13 minutes.
"An RTB was requested and had been approved but we're still trying to figure out the reason," Soerjanto Tjahjono, head of Indonesia's transport safety committee, told reporters.
"We hope the black box is not far from the main wreckage so it can be found soon," he said.