Yes, newspapers reporting that licence pulled permanently because testing indicated that the mental and physical health of the pilot was found to be unstable.
Originally Posted by Detiknews & BNN
Pencabutan izin terbang Tekad tersebut dilakukan karena hasil tes Balai Kesehatan Penerbangan Kemenhub menyatakan kondisi Kapten Tekad tidak stabil secara kesehatan jiwa dan fisik.
Some papers making reference to use of "Gorilla Tobacco" but seems more like rumour mill at this stage.
The substance (mentioned as being AB-CHMINACA) seems to be a synthetic cannabinoid and is currently on a list of substances, in Indonesia, being evaluated for possible listing as a narcotic.
One thing about Indonesia, the truth will probably come out eventually, even if not fully verified.