Shortly before 6am, Indonesian navy divers will resume their search off the north coast of Java for a Boeing 737 that crashed into the sea shortly after take off from Jakarta on Saturday afternoon.
Sixty-two people are missing.
Sriwijaya Air flight SJ182 departed from Soekarno Hatta International Airport at 2.36pm local time (7.36am GMT). The routine domestic flight covering the 452 miles to Pontianak on the island of Borneo is scheduled to take 95 minutes.
The flight-tracking website FlightRadar24 reported that the plane took off to the southwest and initially climbed normally, turning to head northeast to its destination.
The 26-year-old 737 flew a short distance north of the airport and out over the Java Sea before contact was lost.
The twin-jet reached its highest altitude, 10,900 feet, four minutes after take off. But within 21 seconds it had dropped to just 250 feet above sea level. That equates to a vertical speed of over 25,000 feet per minute (340mph).
Local fishermen told CNN that they heard an explosion and were hit by a high wave around the time the plane went missing.
Hendrik Mulyadi told the broadcaster: ”I heard very loud explosion. I thought it was a bomb or a big thunder. We then saw the big wave, about 2 metres high, hitting our boat.”