Preliminary investigations by Indonesia’s National Transport Safety Commission found an engine thrust problem was a factor in the Sriwijaya Air crash.
A throttle issue impacted engine thrust, but investigators still haven’t got all the facts needed to make a conclusive determination.
"The throttle system receives inputs from 13 other related components. We do not know which of these created anomalies," said Captain Nurcahyo Utomo, head of air safety investigation.
"The left throttle moved back too far, while the right throttle did not move at all as if it were stuck."
Two previous flights on the 27 year old Boeing jet experienced throttle system problems.
Nurcahyo said the airline’s maintenance records are being looked at.
The Boeing 737-500 crashed into the Java Sea just minutes after take-off on 9 January, killing all 62 people aboard.
Written by Ray Montgomery, Asia Editor
