Search teams say they have located the position of the aircraft’s black boxes and have been combing the waters to find it.
But the KNKT on Tuesday said that a device used to locate black boxes had experienced “technical problems or equipment damage”.
Black boxes – officially known as the flight data recorder and cockpit voice recorder – store data about planes and can provide vital information in air accident investigations.
Authorities added that they were waiting for a new “ping locator” to arrive from Singapore.
It is unclear how the damaged locator affects the search, but local television on Tuesday showed footage of divers still looking for the black boxes.
Meanwhile several pieces of debris, body parts, wreckage and passengers’ clothing have already been recovered.
