Mapping Of Location Of Black Box Sriwijaya Air SJ-182 Narrowed Down To 140x100 Meters

KRI deployed in the search operation for Sriwijaya Air SJ-182 (Achmad / VOI)

JAKARTA - Indonesian Navy Chief of Staff Admiral TNI Yudo Margono said that the mapping of the black box signal area or black box of the Sriwijaya Air SJ-182 aircraft has been minimized.

Yudo said, currently the radar for locating the black box is 140x100 meters, using a sonar transmitter or multibeam Echosounder since the beginning of the mapping.

"From the results of the multibeam, we have mapped that there is only one triangle area, namely 140 x 100 meters. Hopefully, with this (area) divers will be more focused," said Yudo on the KRI Rigel-933, Monday, January 11.

In the search for the black box, a joint team from Basarnas, TNI, Polri, and a number of volunteers dispatched divers during the day. Then in the afternoon, the Indonesian Navy will deploy a Remote Operator Vehicle or ROV to look for a Black Box belonging to Sriwijaya SJ-182.

"For the ROV, because there are still many divers during the day, it is impossible to lower it because later the cable will hit the diver. Once the diver rested, we lowered the ROV to see underwater in three dimensions," said Yudo.

Even though he has 160 divers consisting of a number of elements to look for the black box which is estimated to be 16 meters underwater, Yudo admits that it is not easy in the search process. This is because it is suspected that the black box was covered by plane debris.

"My experience in leading Lion Air SAR also takes time because there are still a lot of debris there. Moreover, it's only been two days and the debris that has been found is still small and we will continue to take it because there are still a lot of debris," he said.

For information, the black box is an important tool to identify the cause of the crash. The Black Box installed on the aircraft is divided into two parts, namely the Flight Data Recorder (FDR) and the Cockpit Voice Recorder (VCR).

FDR is responsible for storing flight parameters for 25 hours before being overwritten with a new record. This information includes speed, altitude, time, and direction of the aircraft.

A VCR keeps a conversation between the pilot and his crew or the control tower. The recording period is two hours, after which it will continue to re-record itself and overwrite the previous data.