Authorities said they have picked up signals believed to be from the black boxes belonging to the Sriwijaya Air SJ-182 passenger jet that crashed off the coast of Jakarta. The National Search and Rescue Agency (Basarnas), assisted by the Indonesian Navy and relevant agencies, is racing against time to find both flight data and cockpit voice recorders of the aircraft that was meant to land in Pontianak, West Kalimantan, but disappeared from the radar only minutes after taking off on Saturday afternoon. “We continue to monitor the two signals transmitted by the black boxes and we have marked them. Hopefully we can lift the black boxes soon, so that we can find the cause of the accident,” Indonesian Military (TNI) chief Hadi Tjahjanto said on Sunday in a televised press briefing. Carrying 50 passengers and 12 crew members, the aircraft had climbed to about 11,000 f...