Navy divers are confident that they will be able retrieve the two flight recorders when the search operation resumes on Monday.
Aircraft parts and human remains have been found.
The flight Sriwijaya Air Boeing 737 departed from Jakarta airport at 14:36 local time (07:36 GMT) on Saturday. The plane disappeared 04 minutes after takeoff.
It was carrying 62 people when it vanished from radar on its journey to Borneo.
It is thought to have dropped more than 3,000m (10,000ft) in less than a minute, according to flight tracking website Flightradar24.com.
Witnesses said they had seen and heard at least one explosion.