Jakarta –
Indonesian Navigation Service Providing Agency (AirNav Indonesia) reveal communication air traffic controller (ATC) with pilots Sriwijaya Air SJ182 before the plane crashed in the waters of the Thousand Islands. AirNav said that his party had confirmed to the pilot when Sriwijaya Air SJ182 made a left turn that did not match the coordinates.
The chronology of the contact was conveyed directly by the President Director of AirNav Indonesia, Pramintohadi Sukarno, during a hearing at Commission V DPR RI, at the Parliament Complex, Jakarta, Wednesday (3/2/2021). Pramintohadi initially revealed Sriwijaya Air SJ182 take off from runway 25 at 14.36 WIB and contacted ATC at an altitude of 1,700 feet.
“At 14:36 WIB Sriwijaya SJ182 take off from runway 25. Then, after passing an altitude of 1,700 feet contacted Jakarta approach at a frequency of 179 Mhz and instructed controller to go up to an altitude of 29 thousand feet following the SID procedure or the standard departure route, “Pramintohadi said at the meeting.
Pramintohadi revealed that in the middle of the process of rising to 29 thousand feet, or around 14:38 WIB, the Sriwijaya Air SJ182 pilot asked ATC for 0.75 degrees due to weather reasons.
“Passing an altitude of 7,900 feet, the SJ182 requested direction of 0.75 degrees at ATC for weather reasons, and was permitted by ATC and instructed to rise to an altitude of 11 thousand feet,” he said.
This instruction, said Pramintohadi, was answered ‘clear‘by the pilot Sriwijaya Air SJ182. According to him, ATC directed the plane to rise to an altitude of 11 thousand feet because at an altitude of 7,900 stiff there was the same plane passing to Pontianak.
“We ask to rise to an altitude of 11 thousand feet because at the same altitude there is an airplane in the same position that will also fly to Pontianak, namely Air Asia,” he said.
Furthermore, Pramintohadi said, when Sriwijaya Air SJ182 reached an altitude of 10,600, at around 14:39 WIB, ATC asked to climb back up to 13 thousand feet. The Sriwijaya Air SJ182 pilot responded well to this instruction.
“During the process from 14:36 WIB to 14:39 WIB there were no reports of the plane in an abnormal condition. So this all took place normally,” he said.
After that the oddity emerged. Listen on the next page.
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