"There are 330 parameters, and all are in good condition. We are still evaluating it," the committee's chief, Soerjanto Tjahjono, noted in a statement here on Friday.
Head of the sub-committee for aviation accident investigation of KNKT Capt. Nurcahyo Utomo confirmed having received the crash survivable memory unit (CSMU) of the black box.
"The CSMU is part of the black box that can withstand impact and temperature of up to one thousand degrees Celsius for one hour," Utomo revealed.
However, a series of processes should be conducted before the data can be downloaded. "We have to clean the unit of dirt and salt residue that stick on it owing to being submerged in the sea," Utomo stated.
The KNKT awaits the finding of the Cockpit Voice Recorder (CVR) by the joint search and rescue team.
CVR is an important part of the black box for investigation of the flight accident.
The committee had earlier stated that the ill-fated Sriwijaya Air plane’s operating system was functioning normally and was able to send flight data before crashing into the Seribu Islands waters in Jakarta on Saturday (Jan 9).
The committee had collected the ADS-B radar data from the state-run air traffic service, Airnav Indonesia.
According to data, Sriwijaya Air's SJ 182 plane took off at 2:36 p.m. local time and flew to the northwest. At 2:40 p.m. local time, it flew at an altitude of 10,900 feet before it started to descend. The latest data showed that it was only flying at a height of 250 feet.
"The recorded data until its latest position at 250 feet has indicated that the airplane's system had functioned and was able to send data. Based on the data, we suspect that its engine was functioning before it crashed into the waters," the KNKT chief stated.
The committee that observed the crash site aboard Rigel warship also found wreckage of the aircraft scattered in an area 100 meters wide along 300-400 meters in the waters.
"This has supported the surmise that the airplane did not explode before it struck the waters," he stated.
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EDITED BY INE