knkt.go.id/public/files/uploads/posts/posts/postbody/ip.201-1-13-knkt-2021.pdf
Preliminary report of Sriwijaya Air crash.. (sorry in Indonesian languange. Use google translate copy paste to translate).
From Report..
1. Auto Throttle broken. Repaired twice.
2. During take off AT pulls back left engine. AP engaged around 2000 feet.
3. At around 8000 feet, AT again pulls left engine down. Right Engine stays. Continue climb.
4. At 10600 feet, AT again pulls left engine. Right engine stays.
5. Altitude drop. Pitch nose up. Roll started (to left). Then AP disengage. Then nose pitch down.
6. FDR stops recording after 20 seconds. No detail data released.
What can cause AT to pulls 1 engine? Too much engine's vibrations? Faulty sensor data, computer error? Or, (God forbids) thrust reverser deployed during flights?
The preliminary report doesn't explain what pilot do next after 3rd AT pulls down left engine. But i find it hard to believe, even for (i apologize to use the word) un-intelligence pilot NOT to noticed that 1 of the engine start pulling down power, and creates rolls. OR am i wrong? I'm not pilot btw. I just curious (my background is electronics).
That's the latest news from Sriwijaya accident report (preliminary)..