Further information - as reported in Tribun Timur newspaper
Age 32. Began his career with Air Asia Indonesia in 2009.
A pilot who claimed to know him well reported that he is a competent pilot and had shown no signs of strange behaviour while working as FO with Air Asia.
However he started "acting up" after being promoted to captain in late 2015.
Di kalangan teman-temannya sesama pilot Air Asia, Tekad dikenal baik dan tidak bertingkah yang aneh-aneh. Dia baru mulai berulah saat pangkatnya naik menjadi kapten di akhir tahun 2015 lalu.
REPORTED (not verified) that he was dismissed from Air Asia following an incident in which the cabin crew noticed him behaving in an unusual manner.
They reported his behaviour to the safety director and to operational control and the flight was stopped.
After checking on-board the aircraft it was determined (sic) that he had been using some unidentified psychotropic substance.
He had accumulated 4888 flying hours with Air Asia and had racked up a further 656 hrs with Citilink after joining them in March 2016.
Following the incident in Surabaya his employment with Citilink was initially suspended and then terminated.
The assistant director of communications for Citilink reported that the pilot had contravened fundamental conditions of employment "so no need to wait for the results of the investigation to take a decision".
But the three main areas of transgression were :
1. Compromising flight safety
2. Reporting late for duty
3. Bringing the company into disrepute.