I know it has been a long time, but for those that are interested here is the final report. Takeoff atempted with flaps and slats retracted. Tail scraped runway on rotation. CVR was very poor but no takeoff warning horn sounded.
Always check your killer items before takeoff. Flaps, trims, speedbrake handle, maybe pitot heat. Anything else?
http://www.dephub.go.id/knkt/ntsc_av...ala_PK-RIM.pdf