JAKARTA (Reuters) – Indonesia’s air accident investigator has despatched 5 parts of a crashed Sriwijaya Air jet to the USA and Britain for examination, together with the autothrottle that controls engine energy routinely, the company’s head mentioned on Tuesday.
The 26-year-old Boeing (NYSE:) Co 737-500 crashed into the Java Sea shortly after takeoff from Jakarta on Jan. 9, killing all 62 folks on board.
Nationwide Transportation Security Committee (KNKT) Chief Soerjanto Tjahjono informed Reuters the parts had been despatched for examination to assist discover out why an autothrottle parameter had modified. He didn’t establish the opposite elements.
The aircraft’s flight knowledge recorder (FDR) has been discovered and skim by investigators however a maritime search is occurring for the cockpit voice recorder’s (CVR) reminiscence unit that Tjahjono mentioned would assist clarify any human elements behind the crash.
“If we solely have the FDR, we have no idea why the parameter modified, what was the rationale,” he mentioned of the autothrottle. “We want affirmation from the parts that we despatched to the US and UK and the CVR.”
KNKT mentioned final month it was investigating whether or not an issue with the autothrottle system contributed to the crash given a problem with it had been reported on a flight just a few days earlier.
It’s acceptable for a aircraft to fly with an autothrottle system that isn’t working as a result of pilots can management it manually as an alternative.
KNKT plans to difficulty a preliminary report into the crash quickly, presumably on Feb. 9, Tjahjono mentioned.
Citing sources near the investigation, the Wall Road Journal (WSJ) final month reported the FDR knowledge confirmed the autothrottle system was not working correctly on one of many aircraft’s engines because it climbed on departure from Jakarta.
As a substitute of shutting off the system, the FDR indicated the pilots tried to get the caught throttle to perform, the WSJ mentioned. That might create vital variations in energy between engines, making the jet more durable to regulate.
Tjahjono mentioned the WSJ report was incorrect and extra info could be offered within the KNKT’s preliminary report.
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