Pilots at Indonesia's largest airline say they are seriously concerned about the company's safety record.
Pilots of Lion Air have told Al Jazeera that safety rules are being violated, mostly with illegally flying excess hours.
Despite several requests, Lion Air management have not responded to these allegations.
On April 13, a brand new airplane from Lion Air missed the runway in Bali and landed in the sea.
All passengers aboard survived but pilots and former pilots are worried it is just a matter of time before a serious crash happens.
Al Jazeera's Step Vaessen has this exclusive report from Jakarta.